Question

If y=5 when x=2,find y when x=8

Answer 1

turn it into equal frations y/x = y/x

5/2 = y/8
cross multiply
2y=40
divide by 2 on each side
y=20

your answer is y=20

Answer 2

y would equal 20 because if y=5 when x=2 then when x gets multiplied by 4 to become 8 y would be multiplied by 4 also making it become 20