Question

Determine if the ordered pair (2,4)satisfies the equation y=1/2x-5

Answer 1

just put x=2 into the equation and see if you end up with y=4.
if you do, then (2,4) satisfies this equation. otherwise it doesn't.

Answer 2

substitute into the equation x=2, y=4
and you will see

Answer 3

substitute x = 2 and see if you get 4

y = 1/2(2) - 5 y = -4... so the point (2, 4) doesn't satisfy