Two-variable linear equations

Learn about linear equations that contain two variables, and how these can be represented by graphical lines and tables of values.
See how you score on these 20 practice questions

You know what horizontal and vertical lines are, but how do their equations look? And what is their slope? Learn all about it in this tutorial.

Make an introduction with the most common form of linear equations, slope-intercept form! For example, y=3x+5 is a linear equation in slope-intercept form.

Learn how to write the equation of a line (in slope-intercept form) when given the graph of the equation or two points on the line. For example, write the equation of the line that passes through the points (0,1) and (5,4).

Take an overview of the three main forms of linear equations: slope-intercept, point-slope, and standard. Learn which form is most appropriate for different uses.