Question

Direct Variation: If y = 9, when x = -3, find x when y = -27. a.9 b.27 c.-27 d,-9

Answer 1

a. 9

Explanation:

because the orginal number was 9 and the newer one is -27 we can determine that y was multiplied by -3 so you would apply the same rule to -3 or x and you would get a product of 9 because two negatives equals a postive

Answer 2

a. 9

Explanation:

`k = (9)/(-3) = -3\\y = -3x\\-27 = -3x\\(-27)/(-3) = (-3x)/(-3) \\9 = x`