Know that in a ordered pair for example (0, 2) the first number (0) is the x cord and the second (2) is the y cord
Simply plug the cords they give you in for x and y for each question and solve
1. y = 2x, test with the cords they gave you. So it becomes 2 = 2(0) 2 * 0 equals zero and 2 does not equal 0 so the answer is no.
(I cant see the second one)
3. y = 2x + 3 (3, 9)
Plug them in
9 = 2(3) + 3
9 = + 6 + 3
9 = 9
So the answer here is yes