Answer
$y=-(x-4)$
Work Step by Step
Recall, the equation for point slope form is the following: $y- y_{1}=m(x - x_{1})$, where $(x_{1} , y_{1})$ is a point on the line and m is the slope of the line. Thus, we plug 4 in for $x_{1}$, 0 in for $y_{1}$, and -1 in for m to obtain the answer: $y=-(x-4)$
