Question

Which ordered pair is a solution of the equation y=-7x+2?

(1,2)
(8,-54)
(5,-35)
(1,-7)

Answer 1

(8, -54)

Answer 2

Just test it out. Replace x with the left-coordinate, and replace y with the right-coordinate.

If all checks out, then that's the answer.
Say I want to try (2, -12)

Replace x with 2 and y with -12
-12 = -7(2) + 2
-12 = -14 + 2
-12 = -12

All checks out, so (2,-12) is a solution.