Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.

a. yes; k = 4; y = 4x
b. yes; k = 3; y = 3x
c. yes; k = 6; y = 6x
d. no

Determine whether y varies directly with x If so find the constant of variation k and write the equation a yes k 4 y 4x b yes k 3 y 3x c yes k 6 y 6x d no class=