Question

4. Label the following as "proportional" or "non-proportional". y = -9x

Answer 1

y = -9x

is labelled as proportional.

Step-by-step explanation:

Given

y = -9x

Suppose y is directly proportional to x, we have the equation:

y = kx

where k is constant.

Here, k is -9, therefore, this is proportional, and is precisely a direct proportion