Intersection of Graphs Videos - Free Educational Videos for Students in K - 12

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This page provides a list of educational videos related to Intersection of Graphs. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Intersection of Graphs.


Graphing Systems of Equations Video: Graphing Systems of Equations


By yourteachermathhelp

This lesson explains how to solve a system of two equations by graphing. The instructor begins by graphing the line for each equation. Then he demonstrates how to find the point of intersection which is the solution for the system.

Solve systems of equations graphically


By Khan Academy

Sal graphs the following system of equations and solves it by looking for the intersection point: y=7/5x-5 and y=3/5x-1.

Solve systems of equations graphically


By Khan Academy

Sal graphs the following system of equations and solves it by looking for the intersection point: y=7/5x-5 and y=3/5x-1.

Solve systems of equations graphically


By Khan Academy

Sal graphs the following system of equations and solves it by looking for the intersection point: y=7/5x-5 and y=3/5x-1.

Solve systems of equations graphically


By Khan Academy

Sal graphs the following system of equations and solves it by looking for the intersection point: y=7/5x-5 and y=3/5x-1.

Solve systems of equations graphically


By Khan Academy

Sal graphs the following system of equations and solves it by looking for the intersection point: y=7/5x-5 and y=3/5x-1.

Solve systems of equations graphically


By Khan Academy

Sal graphs the following system of equations and solves it by looking for the intersection point: y=7/5x-5 and y=3/5x-1.

More examples of constructing linear equations in slope-intercept form | Algebra I | Khan Academy


By Khan Academy

Watch this video to learn how to derive and graph a linear equation from either: two points on the line the y-intercept and the slope A linear equation (in slope intercept form) is a line of the form y = mx + b where m is the slope and b is the y-intercept--the value at which the line intersects the y-axis.

More examples of constructing linear equations in slope-intercept form | Algebra I | Khan Academy


By Khan Academy

Watch this video to learn how to derive and graph a linear equation from either: two points on the line the y-intercept and the slope A linear equation (in slope intercept form) is a line of the form y = mx + b where m is the slope and b is the y-intercept--the value at which the line intersects the y-axis.

Algebra I Help: Solving Systems of Linear Equations Part II Graphing 2/3


By yourteachermathhelp

The instructor uses a white board for demonstration and this video is suitable for high school students. Students learn to solve a system of linear equations by graphing. The first step is to graph each of the given equations then find the point of intersection of the two lines which is the solution to the system of equations. If the two lines are parallel then the solution to the system is the null set. If the two given equations represent the same line then the solution to the system is the equation of that line.

Inverse Functions | MathHelp.com


By MathHelp.com

In this example, we’re given a relation in the form of a chart, and we’re asked to find the inverse of the relation, then graph the relation and its inverse. To find the inverse of a relation, we simply switch the x and y values in each point. In other words, the point (1, -4) becomes (-4, 1), the point (2, 0) becomes (0, 2), the point (3, 1) becomes (1, 3), and the point (6, -1) becomes (-1, 6). Next, we’re asked to graph the relation and its inverse, so let’s first graph the relation. Notice that the relation contains the points (1, -4,), (2, 0), (3, 1), and (6, -1). And the inverse of the relation contains the points (-4, 1), (0, 2), (1, 3), and (-1, 6). Finally, it’s important to understand the following relationship between the graph of a relation and its inverse. If we draw a diagonal line through the coordinate system, which is the line that has the equation y = x, notice that the relation and its inverse are mirror images of each other in this line. In other words, the inverse of a relation is the reflection of the original relation in the line y = x.

Systems of Three Equations | MathHelp.com


By MathHelp.com

Here we’re asked to graph the following function and use the horizontal line test to determine if it has an inverse. And if so, find the inverse function and graph it. So let’s start by graphing the given function, f(x) = 2x – 4, and remember that f(x) is the same as y, so we can rewrite the function as y = 2x – 4. Now, we simply graph the line y = 2x – 4, which has a y-intercept of -4, and a slope of 2, or 2/1, so we go up 2 and over 1, plot a second point and graph our line, which we’ll call f(x). Next, we’re asked to use the horizontal line test to determine if the function has an inverse. Since there’s no way to draw a horizontal line that intersects more than one point on the function, the function does have an inverse. So we need to find the inverse and graph it. To find the inverse, we switch the x and the y in original function, y = 2x – 4, to get x = 2y – 4. Next, we solve for y, so we add 4 to both sides to get x + 4 = 2y, and divide both sides by 2 to get 1/2x + 2 = y. Next, let’s flip our equation so that y is on the left side, and we have y = 1/2x + 2. Finally, we replace y with the notation that we use for the inverse function of f, as shown here. And remember that we’re asked to graph the inverse as well, so we graph y = ½ x + 2. Our y-intercept is positive 2, and our slope is ½, so we go up one and over 2, plot a second point, graph the line, and label it as the inverse function of f. Notice that the graph of the inverse function is a reflection of the original function in the line y = x.

12 - Solving 3-Variable Linear Systems of Equations - Substitution Method


By Math and Science

Quality Math And Science Videos that feature step-by-step example problems!

05 - Quadratic Systems of Equations (With Lines, Circles, Ellipses, Parabolas & Hyperbolas)


By Math and Science

Quality Math And Science Videos that feature step-by-step example problems!

Addition elimination method 3 | Systems of equations | 8th grade | Khan Academy


By Khan Academy

Khan Academy presents Addition Elimination Method 3, an educational video resource on math.

Area Between Two Curves


By The Organic Chemistry Tutor

This calculus video tutorial provides a basic introduction in finding the area between two curves with respect to y and with respect to x. It explains how to set up the definite integral to calculate the area of the shaded region bounded by the two curves. In order to find the points of intersection, you need to set the two curves equal to each other and solve for x or y. You need to be familiar with some basic integration techniques for this lesson. This video contains plenty of examples and practice problems.