Answer :
Basically we need to find the line equation. So let's take two pair of points and find the slope m:
[tex]\begin{gathered} m=\frac{y2-y1}{x2-x1} \\ \text{Where:} \\ x1=-2 \\ x2=2 \\ y1=-18 \\ y2=10 \end{gathered}[/tex]Therefore:
[tex]m=\frac{10-(-18)}{2-(-2)}=\frac{28}{4}=7[/tex]Now, let's use the slope point equation:
[tex]\begin{gathered} y-y1=m(x-x1) \\ y-(-18)=7(x-(-2)) \\ y+18=7x+14 \\ \text{Solving for y:} \\ y=7x-4 \end{gathered}[/tex]