Answer
x=8
Work Step by Step
Since we know that in a direct variation the ratio of $\frac{y}{x}$ is constant, lets divide the two y-coordinates with their respective x-coordinates and set them equal to each other:
$\frac{3}{-5}$=$\frac{-4.8}{x}$ (Cross Multiply)
3x=24 (Divide both sides by 3)
x=8
