If y varies directly as x and y = 30 and x = - 10, find y when x = 56

y = -168

Step-by-step explanation:

The direct variation is given by

y = kx

Y=30 and x = - 10 we can find k

30 = k (-10)

30/-10 = k (-10) / -10

-3 = k

y = - 3x

We know x and we want to find y

y = - 3 (56)

y = -168