Algebra 1: Common Core (15th Edition)

$y=-14$
The function form of a direct variation is $y=kx$. $8=k(-4)$ - Substitute $x=-4$ and $y=8$- $8=-4k$ $-2=k$ The direct variation equation would be $y=-2x$ $y=(-2)(7)$ when $x=7$ so therefore $y=-14$