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

Linear functions in any form Learn Slope from equation Writing linear equations in all forms

Think of linear as just a line. A linear function is one that, when graphed, forms a line. Linear functions are in the form: f(x) = ax + b, where a and b are constants.

Find the equation of this line in point slope form, slope intercept form, standard form. And the way to think about these, these are just three different ways of writing the same equation.

Sal is given the formula of a linear function and the graph of another, and is asked to determine which function increases faster. Created by Sal Khan.

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

Explore linear functions and their applications with interactive lessons and practice exercises on Khan Academy.

Learn how to create a graph of the linear equation y = 2x + 7. Created by Sal Khan and CK-12 Foundation.

Sal is given a verbal description of a real-world relationship involving a melting iceberg, and is asked to find the formula of the function that represents this relationship.

Given a graph of a line, we can write a linear function in the form y=mx+b by identifying the slope (m) and y-intercept (b) in the graph. GIven a graph of an exponential curve, we can write an exponential …