The domain for 3x+y=8is(-1,2,5,8)find range?

Answer 1

Substitute -1 for x:
You get -3+y=8, so y = 11

Let x =2,
then 6+y=8, so y = 2

x=5:
15+y=8, so y = -7

x=8:
24+y = 8, so y = -16

Range: = {-16, -7, 2, 11}