Question

Does the following graph represent a proportional or non-proportional relationship? Explain your reasoning.

Answer 1

Non-proportional relationship

Explanation:

Proportional relationships must pass through the origin. Otherwise, at
`x=0`, we lose the constant of proportionality, and the y-value at
`x=0` becomes correlated only to the y-intercept.

The format for a proportional relationships is given by
`y=kx`, where
`k` is some constant referred to as the constant of proportionality.