Question

Suppose y varies directly with x. Write a direct variation equation that relates x and y

0.7x -1.4y=0

Answer 1

direct variation y= kx

0.7x -1.4y=0

add 1.4y to each side

.7x = 1.4y

divide each side by 1.4

.7x/1.4 =y

.5 x =y