Functions W and Z are both linear functions of x.

Function z

Function W

x + 30

15.8

15.76

15.72

15.68

Which statement comparing the functions is true?

Complete Question

The complete question is shown on the first uploaded image  

The statement comparing the function is  

Step-by-step explanation:

First thing  to do is generate equation for  Z

    We have that

               at  

           and at      

Now                 y =   m x + c

        m is the slope which is mathematically represented as

So the equation of the line is mathematically represented as

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)