Question

If the value of "y" varies directly with "x"
and y = -8 when x = 4.
Find "y" when x = -4

Answer 1

Y=K×X

when Y=-8 and X=4

-8=K×4

-8=4K divide both sides by 4

K=-2 constant

To find Y when X=-4,Y=? and K=-2

Y=-2×-4

Y=8