if y=5 when x=2,find y when x=8
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
turn it into equal frations y/x = y/x5/2 = y/8cross multiply 2y=40divide by 2 on each side y=20your answer is y=20
