how do i do this? and how do i start it

Explanation
We can find the required equation using the formula below
[tex]\frac{y_2-y_1}{x_2-x_1}=\frac{y-y_1}{x-x_1}[/tex]Where the coordinates are any random points from the table.
Therefore,
[tex]\begin{gathered} \text{When }(x_1,y_1)=(0,-2) \\ \text{and (}x_{2,}y_2)=(3,7)_{} \\ \end{gathered}[/tex][tex]undefined[/tex]