When absolute values and functions collide, the results can be a little strange. If we treat like just any old linear function, we'll make mistakes. This page helps point out the pitfalls of using those deceptive little bars.

All the basics of linear equations sitting on one page. Mighty convenient.

Linear inequalities got you down? Let this colorful explanation lift your spirits.

Go Patrick, go. Teach that piecewise function who's boss.

Find the domain and range of a function using some spare rope in your backyard.

Khaaaaan! can walk us through working with standard form. Thanks, Khaaaaan.

Make mad money by identifying the correct linear inequality. It seems a bit fishy to us, honestly. Why don't you try it first?

Rescue cute, googly-eyed alien critters by determining the equation of the line they make.

Graph one or two functions in slope-intercept form, all without needing to pick up a pencil.