Question

Can anyone please help?
(sorry for low quality...)

Answer 1

3. NO

4. YES

Explanation:

A proportional relation is of the form:

y = kx

Note that the y-intercept has to be 0, and slope should be constant

First one (Height against age) is not proportional because the intercept is 30, not 0

Second one (Time against distance) is proportional because the slope is constant and the y-intercept is 0

Answer 2

see below

Explanation:

The age is not a proportional relationship because it does not go through the point (0,0)

The hours is a proportional relationship. It goes through the point (0,) and has a constant slope