Test your understanding of Linear equations, functions, & graphs with these 22 questions.

Explore linear equations and graphs through interactive lessons, videos, and exercises on Khan Academy. Enhance your algebra skills for free.

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When distances, prices, or any other quantity in our world changes at a constant rate, we can use linear functions to model them. Let's learn how different representations, including graphs and equations, …

The standard form of a linear function, A y + B x = C , where, A , B , and C are constants, will often be used in word problem scenarios that have two inputs, instead of an input and an output. To find the …

When distances, prices, or any other quantity in our world changes at a constant rate, we can use linear functions to model them. Let's learn how different representations, including graphs and equations, …

A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions. Unit guides are here! Power up your classroom with …

This lesson explains how to use piecewise linear functions to model real-world situations. A piecewise function is defined by different rules for different parts of its domain. Graphs of piecewise linear …

Sal is given a line segment on the coordinate plane, and he graphs the inverse of the function represented by that segment.

Learn how to graph lines whose equations are given in the slope-intercept form y=mx+b.