Question

which graph is not proportional? the pink graph the black graph both neither

Explanation:

Step1: Recall Proportional Graph Rule

A proportional relationship graph is a straight line passing through the origin \((0,0)\).

Step2: Analyze Pink Graph

The pink graph starts at \((0,0)\), so it passes through the origin.

Step3: Analyze Black Graph

The black graph starts at \((0, 3)\) (not the origin), so it does not satisfy the proportional relationship's graph requirement.

Answer:

The black graph