Answer:
2
Step-by-step explanation:
The rate of change is defined by [tex]\frac{Rise}{Run}[/tex] , [tex]\frac{y_{2} - y_{1} }{x_{2}-x_{1}}[/tex]. or [tex]\frac{Delta y}{Delta x}[/tex].
For your question, the points are (0,4) and (2,8).
Plugging these points into the formula:
[tex]\frac{8-4}{2-8}[/tex]
After calculations, you would end up with [tex]\frac{4}{2}[/tex] or 2.
