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How To: Derive a point-slope equation from a graph

Do the words point-slope equation send your head into a spin? Well hold on tight, because the mathproblemgenerator.com has your cure? Here you can find a informative video about calculating slope, as well as finding points to substitute into the equation. After watching this video, you will be well prepared to produce a point-slope equation from any graph.

How To: Make authentic Mexican cheese enchiladas

You've had chicken and beef enchiladas, now try the version - vegetarian except for the chicken stock (maybe you can substitute with vegetable stock). This Mexican dish is so simple to make. Follow along in this cooking how-to video to learn how to make Mexican cheese enchiladas.

How To: Play 9th chords

This guitar lesson covers two shapes of the 9th chord (dominant). They are great substitutes for the regular 7th chords you might use in a normal blues. Any time you would normally play a 7th chord you could substitute it for a 9th chord.

How To: Make traditional Italian pesto

A traditional Italian sauce, pesto contains fresh basil, parmesan cheese, garlic, and olive oil. Try it with pasta or in recipes. You will need basil, garlic, parmesan cheese, pinenuts and extra virgin olive oil. In place of the pinenuts you can substitute cashews or not use nuts at all. This sauce can be frozen in an air tight container.

How To: Grill an easy beer can turkey in no time

Thanksgiving dinner doesn't have to be a nightmare. If you have a decent-sized grill, you have the perfect platform for a delicious turkey feast. But there's one more thing you'll need— beer. It's called a beer can turkey, but you can substitute the beer can for just plain water and spices.

How To: Find the surface area of a cube

In this video, we learn how to find the surface area of a cube. Finding the surface area of a cube is something everyone will have to do in math. The easy formula to figure out this is: surface area= side x side x 6. Your first step to figuring out the problem is to find the length of a side. Once you have found this, you will substitute and evaluate the numbers in the equation. After this, write the units in for the problem. You will then come up with the answer of the equation with the unit...

How To: Find the standard deviation with the Z-Score formula

In this tutorial, we learn how to find the standard deviation with the Z-Score formula. First, take your problem and write it out one by one underneath each other. Then, you will need to substitute the numbers in for the variables that are in the problem. Once you do this, you will follow the basic rules of math to find out what the answer to the problem is appropriately. Once you have done this, finish off the problem to find the answer, then you will have found the standard deviation using ...

How To: Find the area of a triangle given three points

In this tutorial, we learn how to find the area of a triangle given three points. First, you will need to plot the points on a graph. After this, find the base and the height using the graph. Next substitute into area of a triangle formula and then evaluate. When you finally find the area of the triangle, then you will write down the answer ending it with the units. This is a simple way to find the area of the triangle, you just have to make sure you count correctly and have calculated the ar...

How To: Fold an elegant origami swan by Robert J. Lang

Origami is a lot of fun (okay, and also a lot of frustration), but what often turns beginners off from the Japanese art form is simply that it requires special origami tissue paper. While it's true that thin paper made exclusively for origami is preferable for any origami project, you can substitute plain old printer paper instead if you're low on money or just out of origami tissue paper.

How To: Grow a moss garden

You may not think of it as a great addition to your garden, but moss can be something that can add quite a bit. There are many uses for having moss in your garden, and one of the benefits to having it can be a good substitute for other plants since it doesn't require too much sun and can be in the shade. So in this tutorial, you'll find out how to grow a moss garden outside your home today. Good luck and enjoy!

How To: Extract the nth word from a text string in Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 559th installment in their series of digital spreadsheet magic tricks, you'll learn how to extract the first, last or nth word from a text string using Excel's SUBSTITUTE, LEN, SEARCH, REPLACE, LEFT, RIGHT and MID functions.

How To: Extract first, middle, & last names in Microsoft Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 562nd installment in their series of digital spreadsheet magic tricks, you'll learn how to extract first, middle and last names when the list contains names where some have a middle name and some do not using the LEFT, SEARCH, LEN, SUBSTITUTE, LEN, MID and IF functions.

How To: Work with exponential growth functions in mathematics

Exponential functions are functions which contains terms which are integers raised to the power of variables. Note that the variables are not raised to the power of integers, but the integers are raised to the power of variables. Variables raised to the power of integers are called as polynomials and are a different class of functions. But exponential functions grow very fast than polynomials with the increase in the value of the variable. To understand the growth of these functions take a si...

How To: Find the equation of a line in point-slope form

When you are given a point through which a line passes and the slope of that line, you can calculate the equation of that line. The general equation to solve this kind of equations is called as point-slope form. The point slope of a line passing through (a, b) with slope of m is (y - b) = m * (x - a). Now substituting the values in the above equation you can obtain the equation of the line in terms of x and y. In case you are given with two points first find the slope of the line which is the...

How To: Remove carpet to install concrete floors

Bob Harris of decorative concrete institute explains how you can remove your tiled or carpeted flooring for a concrete substitute. He suggests when your removing carpeting that it can be very heavy and advises you to hire someone who can lift and carry it out, or rent a dumpster for easy take away. He states that after the carpet is removed you'll need to remove the adhesive from the floor. You can do this by stripping or grinding, and at other times the use of harsh chemicals may be needed. ...

How To: Approach questions on SAT passage section

Eva Holtz shows us how to approach different types of questions on the SAT, in this episode from Brightstorm. The different types of questions in the SAT Passages section include "Vocabulary in Context", "Line reference", "Whole passage", and "I, II, III, except, least, not" questions. Eva explains that the best way to approach Vocabulary in Context questions is to treat them like Sentence Completion questions. First, read two lines before and after the word in question. Then, it's best to ca...

How To: Find the equation of a perpendicular line easily

In this video the instructor shows how to find out an equation of a perpendicular line. If you need to find the equation of a line passing through the given point and is perpendicular to another line, the first thing you need to do is compute the slope of the given line. Obtain the slope of the equation by writing it in the form of y = mx + b. Now the product of slopes of two perpendicular lines is a negative one. So the slope of our required line will be the negative inverse of the slope of ...

How To: Make a silver figure 8, Egyptian link jewelry necklace

Save money by making your own jewelry at home! Learn how to make yourself a beautiful Egyptian link, figure 8 necklace by following the easy to follow instructions in this two-part video. The wire used in this example is a standard 0.035 sterling silver wire. You can substitute 0.035 with an 18 gauge nickel silver wire (or you can experiment with other wire). In addition to the wire you will need three pliers to make this necklace: round nose pliers, chain nose pliers and diagonal cutters.

How To: Graph a linear equation

In this video tutorial, viewers learn how to graph a linear equation. The linear equations example used in this video is y= 1/3x-3. The equation to graph a linear equation is y= mx+b. Now substitute each number into the equation. Therefore, m= 1/3 and b= -3. Begin by graphing the Y-intercept. M is the slope and b is the y-intercept. Plot the y-intercept on the -3 axis. Then move up once and to the side 3 times. This video will benefit those viewers who are struggling with this math unit and a...

How To: Graph linear equations with a table of values

The author teaches us how to graph the linear equations with tables. Given a set of linear equations in terms of "x and y", first we have to draw a table having a column each for x and y. We have to enter an arbitrary value of x in that table and substitute that value in the given equation to get the corresponding y value. Once you obtain both x and y values, the next step is to plot them in a graph. Consider an example: in the linear equation x=2y,on substituting an arbitrary value of x=2,we...

How To: Find a formula describing direct variation

In this video the instructor shows how to find a formula describing direct variation between two variables. Variation between two variables can be either direct variation or indirect variation. If a variable y is in direct variation with a variable x we can write the general equation between them as y = k * x. That is as x varies, y varies directly in relation to x, as a multiple of x. Now if you have the values of y and x, you can substitute them in this general equation which gives you the ...

How To: Find the percent change using proportions

In this video, the instructor shows how to identify the percentage change using proportions. When a given quantity increases or decreases by certain amount then we can calculate the percentage change in the quantity, which can be either increase or decrease based on the new value of the quantity. To solve these kind of situations you should know that the ratio of amount of increase (or decrease) of an amount to its original amount is equal to the ratio of percentage increase (or decrease) to ...

How To: Factor the difference of squares

In this video the instructor shows how to factor the difference of squares using a formula. The formula to find the difference of squares can only be applied if you have two perfect squares. The formula is (a * a - b * b) = (a - b) * (a + b). That is the difference of squares of two numbers is the product of sum of two numbers and difference of two numbers. So when you need to find the difference of squares of two numbers substitute the values in the above formula to directly solve for the fa...

How To: Solve a system of equations w/ the elimination method

The video shows us how to solve a system of equations with the elimination method. First write the two equations one on top of the other, as it is going to be elimination method and it is recommended to write it in that way. Here the 2 equations are x+y=-3 and x-y=1. In the elimination method we need to add the 2 equations by columns. So adding it column wise we get to have 2x=-2 and solving this we will get the value of x=-1. Then you need to substitute this value of x in any of the two equa...

How To: Graph x squared & the square root of x

In this video the instructor shows how to sketch the graph of x squared and square root of x. The first equation is the x squared which is y = x * x. Now to sketch this take a sample values of x and substitute in the equation to get the value of y. Similarly find the set of points for the equation. Finally plot these points and sketch this graph which is in the form of a parabola. The curve is in the form of alphabet 'U' with its vertex at the bottom. Now similarly take the square root of x e...

How To: Factor the GCF and difference of squares

In this video the instructor shows how to factor the GCF and difference of squares. When you are asked to factorize a number or monomial or a polynomial, the way to do is break it down into individual terms. When asked to factorize a binomial, try to pull out any common terms and factorize the simplified equation. When you are asked to factorize the difference of squares use the general formula which states that the factors of (a*a - b*b) is (a-b) * (a+b). Now substitute the given values in t...

How To: Apply the Pythagorean Theorem to right triangles

In this video the instructor talks about Pythagorean theorem and how to apply it to right triangles. Pythagorean theorem states that in any right triangle if a and b are the lengths of the legs and c is the length of the hypotenuse the sum of the squares of the lengths of the legs is equation to the square of the length of the hypotenuse. That is a*a + b*b = c*c. This theorem works only for right angled triangle. So if you have the lengths of the two legs of a right triangle substitute the va...

How To: Find the equation of a perpendicular line

In this video the instructor shows how to find out an equation of a perpendicular line. If you need to find the equation of a line passing through the given point and perpendicular to another line, the first thing you need to do is compute the slope of the given line. Obtain the slope of the equation by writing it in the form of y = mx + b. Now the product of slopes of two perpendicular lines is negative one. So the slope of our required line will be negative inverse of the slope of given lin...

How To: Convert temperature using a point slope equation

In this video the instructor shows how to convert temperature using the point slope form. In this kind of problem sometimes you are given a temperature in Fahrenheit and its equivalent in Celsius and an other temperature similarly in both Fahrenheit and Celsius. Now you are asked to find a linear equation for these pair of temperatures. To solve these kind of problems assume that the given temperatures represent the point (x, y). Now you have two points. Substitute this value in the point slo...

How To: Solve problems about linear equation

In this video the instructor shows how to write a linear equation. If you need to find the equation of a line that passes through the two given points then you need to find the linear equation of that line. The first step is to find the slope of the line that passes through these points. The slope can be calculated by finding the ratio of the difference of y coordinates to the difference of the x coordinates i.e. the change in y up on the change in x. Now substitute the value of slope and any...

How To: Solve direct & inverse variation word problems

In this video the instructor teaches about direct and inverse variation. Two variables x and y are said to be in direct variation with each other if you can write them in the form y = K * x. The value of y varies directly corresponding to the value of x. Y is said to be directly proportional to x. If you have a sample value of x and y, you can substitute the values in the above equation to compute the value of the constant K. Using this formula you can always find the value of one variable x ...