Find the solution of the system of equations.

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

Whats the name of the vertical axis