Question

Find the constant of variation k for the direct variation. 4x = -6y

(A.) k = -2/3 (B.) k = 2/3 (C.) k = -3/2 (D.) k = -6

Answer 1

k = -
`(2)/(3)` → A

the equation for direct variation is y = kx ( k is the constant of variation )

thus k =
`(y)/(x)`

given - 6y = 4x is a direct variation equation then

k =
`(4)/(- 6)` = -
`(2)/(3)`

k =