4. which of the following functions has a rate of change that stays the same?
y=-4x+10
y=1/2x^2
y = 3^x
y=x^2+2

Step-by-step explanation:

A linear function has a constant rate of change.

So all you need to do is to identify which of the given options is a linear function.

is a linear function and the rate of change is -4.

We can see this is a constant.

has a variable rate of change which is

also has a rate of change which is  

also has a variable rate of change which is 2x

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation: