Geometry i have no idea how to do this. both pictures! (#12, #16)

The answer to your question is letter D

Step-by-step explanation:

Line equation      y = x

A.  (1, -1)    

Substitute the point in the equation

                            -1 = 1  

This point is not on the line because -1 ≠ 1

B. (4, 2)

                          2 = 4

This point is not on the line given because 2 ≠ 4

C. (-3, 3)

                          3 = -3

This point is not in the line given because -3 ≠ 3

D. (-3, -3)

                         -3 = -3

This point is on the line because - 3 = - 3