The standard form equation for a circle can tell you quite a bit about the graph of that circle! Learn more about it with this tutorial.
Subtracting a positive is the same thing as adding a negative. Subtracting a negative is the same as adding a positive. Get a closer look with this tutorial!
Ordered pairs are a fundamental part of graphing. Ordered pairs make up functions on a graph, and very often, you need to plot ordered pairs in order to see what the graph of a function looks like. This tutorial will introduce you to ordered pairs!
What exactly is a circle? Learn the answer in this tutorial. You can also see the equation for a circle that's on the coordinate plane!