http://www.freemathvideos.com In this video series I show you how to find the slope or rate of change from a line, two points, table and/or graph. The slope of a line is the change in the y coordinates divided by the change in the x-coordinates.

An example of finding the slope between two points.

WRITING LINEAR EQUATIONS

PRACTICE - LEVEL 3

PRACTICE - LEVEL 4

Find the Equation of a Line Using Point-Slope Form - I show one complete example of finding the equation of a line using point-slope form.

Point-slope and slope-intercept form from two points.

This tutorial shows how to find a line, given a point and a slope by using the point slope formula. The line is then solved in slope intercept form and sketched.

SOLVING SYSTEMS BY GRAPHING

PRACTICE - LEVEL 3

PRACTICE - LEVEL 4

In this lesson, students learn to solve a system of linear equations by graphing.

Solving a Linear System of Equations by Graphing. In this video, I solve a relatively simple simple of linear equations by graphing.

Solving Linear Systems by Graphing.

SOLVING SYSTEMS BY SUBSTITUTION

PRACTICE - LEVEL 3

Solving Linear Systems by Substitution.

MIT grad shows how to use the substitution method to solve a system of linear equations (aka. simultaneous equations).

A system of two equations in x and y can be solved by rearranging one equation to represent x in terms of y, and then substituting this expression for x into the other equation to create an equation with only the variable y.

SOLVING SYSTEMS BY ELIMINATION

PRACTICE - LEVEL 3

PRACTICE - LEVEL 4

Solving Systems of Equations by Elimination.

MIT grad shows how to use the elimination method to solve a system of linear equations (aka. simultaneous equations).

Systems of two equations in x and y can be solved by adding the equations to create a new equation with one variable eliminated. This new equation can then be solved to find the value of the remaining variable. That value is then substituted into either equation to find the value of other variable.