The instructor uses a computer graphing program to illustrate how a line changes slope by manipulating the slope values in the equation. He also manipulates the y-intercept value to see where the line crosses the y-axis.

Given two points on a line, this video shows how to write the linear equation in point-slope, slope-intercept, and standard forms. First, Sal reviews each of these forms, then calculates the slope, writes the equation in point-slope...

Use slope to find the location of horizontal and vertical tangent lines. Using the derivative of a radical function, the presenter finds the points where the derivative is zero or undefined on a given interval. The 26th in a series of 31...

Do not always be maxed out by the vertex. A short video introduces the graphical display of the vertex and zeros of a quadratic function. The presenter provides the definitions of the minimum and maximum of the graph along with...

This video demonstrates how changing the slope and y-intercept of a line can help determine the equation of a line that passes through two points. The video demonstrates how to use a Khan Academy software program that allows you to...