Acell phone company charges $40 for the phone plus a monthly service charge of $25. the equation below describes the cost y after x months.
y = 25x + 40
which is true of the relationship between x and y?
a. it is linear and proportional
b. it is linear and non proportional
c. it is not linear and proportional
d. it is not linear and not proportional

A

Step-by-step explanation:

It is definitely linear

As it is linear, it needs to be in a straight line. That is why it is proportional.

your answer is the last one

step-by-step explanation:

divide the length of a'c' by the length of ac to get a scale factor of two

& then reflect vertically (over the y-axis)

so your answer is dilation by a scale factor of 2 followed by reflection over the y-axis