Removing which point from the coordinate plane would make the graph a function of x?

(–4, 3)
(–2, 1)
(0, 4)
(1, 1)

What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?