Question

For which function is the ordered pair (5, 10) not a solution?

y = 2x
y = x + 5
y = 15 - x
y = x - 5

Answer 1

y=x-5

Substituting 5 for the value of x gives y=0

Answer 2

Y=15-X (5=15-10) ; Y=X-5 (5=10-5)