I need help on these.

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store. which equation can be used to determine the approximate shoe size, s, for a foot length of x inches? s = x – 2 s = 2x – 10 s = x + 6 s = 2x + 4

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?