Question

Identify the parent function that can be used to graph the function (x) = - 3x + 2

a. Hx) = x
c. f(x) = x
b. f(x) = [x]
d. f(x) = 21

Answer 1

c

Explanation:

the function (x) = -3x+2 can be obtained by :

* stretching the function (x)=x in the y-axis by 3 units gives 3x

* then reflecting about x-axis gives -3x

* finally shifting it up by 2 units gives -3x+2

so the parent function is f(x) = x