evaluate the function graphically.\nfind $f(7)$

Explanation:

Step1: Find line equation from intercepts

The line crosses $(0,-1)$ and $(-1,0)$. Slope $m=\frac{0-(-1)}{-1-0}=-1$. Equation: $y=-x-1$.

Step2: Substitute $x=7$ into equation

$y=-(7)-1$

Answer:

$-8$