Practice Linear equations word problems: graphs Get 3 of 4 questions to level up!

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, …

Practice Relating linear contexts to graph features Get 5 of 7 questions to level up!

This topic covers: - Intercepts of linear equations/functions - Slope of linear equations/functions - Slope-intercept, point-slope, & standard forms - Graphing linear equations/functions - Writing linear …

If we want to write a linear function that represents this, the first thing to discuss is what you want x and y to be. The question tells us that y should be the account's value, and x should be the number of …

Learn to recognize if a function is linear. Created by Sal Khan and Monterey Institute for Technology and Education.

Inputs and outputs of a function Learn Worked example: matching an input to a function's output (equation) Worked example: matching an input to a function's output (graph) Worked example: two …

Linear equations like y = 2x + 7 are called "linear" because they make a straight line when we graph them. These tutorials introduce you to linear relationships, their graphs, and functions.

In addition to inputting a specific value, we can also input one function into another function, which creates a composite function defined by a single expression.

We've seen linear and exponential functions, and now we're ready for quadratic functions. We'll explore how these functions and the parabolas they produce can be used to solve real-world problems.