Question

Given 8x + 4y = 24 with a domain of {-2, 5, 9}, find the range

Answer 1

8(-2) + 4y = 24
-16 + 4y = 24
y = 40/4
y = 10

8(5) + 4y = 24
4y = 24 - 40
y = -16/4
y = -4

8(9) + 4y = 24
4y = 24 - 72
y = -48/4
y = -4

Range = {10,-4,-4}