Graphing lines and slope

This course is a part of Algebra basics, a 8-course Topic series from Khan Academy.

Use the power of algebra to understand and interpret points and lines (something we typically do in geometry). This will include slope and the equation of a line.

This course contains 8 segments:

Coordinate plane

Let's get cozy with the x and y axis, plotting ordered pairs, quadrants, and reflection points.

Solutions to two-variable linear equations

Understand what a solution to an equation really means. Practice plugging in values for variables to see whether or not an equation is true.

x-intercepts and y-intercepts

Learn about intercepts and practice finding them from graphs, tables, and equations.

Slope

Learn about slope (the steepness of a line) and how to find it.

Horizontal & vertical lines

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.

Slope-intercept form intro

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.

Writing slope-intercept equations

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).

Graphing two-variable inequalities

Learn how to graph two-variables linear inequalities.