This lesson relates slope-intercept form to slope and direct variations. It is 3 of 4 in the series titled "Slope-Intercept form and Direct Variation."

This lesson demonstrates how to write a linear equation in standard form when given slope and one point on the line.

This lesson demonstrates how to write a linear equation in standard form when give two point on the line.

Given the slope and y-intercept of a line, this lesson how the equation of the line can be found. It is 1 of 11 in the series titled "Finding an Equation from the Slope and the Y Intercept."

This lesson explains the definition, location, and labeling of midpoints. It is 3 of 6 in the series titled "Midpoint of a Line Segment."

This video tutorial demonstrates how to solve a linear system of equations by graphing. The lesson includes detailed examples.

The relationship between slopes of perpendicular lines is discussed in this lesson. It is 6 of 6 in the series titled "Slope in Perpendicular Lines."

This lesson explains the definition, location, and labeling of midpoints. It is 2 of 6 in the series titled "Midpoint of a Line Segment."