Question

determine whether y varies directly with x. if so, find the constant of variation k.
-4y=8x+16

Answer 1

you can make a T chart to determine... when they're vary directly, y gets positive while x gets positive

Answer 2

if you divide by -4 you get

\[y=-2x-4\]

graphing this you get

Answer 3

as you can see, as x gets bigger, y decreases, therefore it is not direct variation

Answer 4

thanks for helping!!

Answer 5

no problem