Answer
$y=x+3$
Work Step by Step
We first find the slope. The equation for slope is: $ \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$. Thus, we obtain:
$\frac{5-3}{2-0}=\frac{2}{2}=1$
We now plug this slope in for m, plug in an (x,y) point on the graph, and solve for b:
$y=x+b \\\\ 3=0+b \\\\ b=3$
We now plug b in with m to get the final equation:
$y=x+3$