Graph Properties:

GP1 - Distance Formula:  If two points in a plane are given by (x₁, y₁) and (x₂, y₂), then the distance from (x₁, y₁) to (x₂, y₂) is

GP2 - Definition of a Circle:  A circle with radius r, centered at (h,k) is defined as a set of points such that the distance from any point (x, y) to the center (h,k) is equal to r.

GP3 - Definition of a x-intercepts:  If an equation for y is given in terms of x, the x-intercepts will be all points such that the equation give for y is equal to 0.

GP4 - Definition of a y-intercepts:  If an equation for y is given in terms of x, the y-intercepts will be all points such that the x value is equal to 0.