General equations as functions (proportional, inverse, or linear)

Question

Identify each of the following general equations as functions that are: proportional, inverse, or linear

1. In the following functions "x" and "y" are variables (x is the independent variable; y is the dependent variable)
2. In the following functions "m", "b", and "c" are constants

From the options above, what is the correct function name for equation.

a) y = mx 

b) y = mx + b 

c) y = m/x 

d) c = xy

Answer 1

a) proportional

b) linear

c) inverse

d) inverse