Answer
linear, $y=5x+3$
Work Step by Step
Step 1. The function is linear because the y-spacing is proportional to the x-spacing.
Step 2. Use two points to find the slope $m=\frac{8-3}{1-0}=5$
Step 3. Use point $(0,3)$, we have $y-3=5x$ or $y=5x+3$