Algebra Test Functions and Graphs 2

Question 1

What transformation does y = f(x) + 3 represent?

Accepted Answer

Shift 3 units up

Answer

Shift 3 units right

Answer

Shift 3 units left

Answer

Shift 3 units down

Question 2

Which function graphs as a straight line?

Accepted Answer

f(x) = 2x + 1

Answer

f(x) = x²

Answer

f(x) = √x

Answer

f(x) = 1/x

Question 3

If f(x) = x² + 1 and g(x) = 2x, what is (f ∘ g)(3)?

Accepted Answer

37

Answer

19

Answer

13

Answer

7

Question 4

A negative leading coefficient on a quadratic function:

Accepted Answer

Makes it open downward

Answer

Shifts the parabola up

Answer

Shifts it right

Answer

Makes it narrower

Question 5

What is the inverse of f(x) = 2x + 6?

Accepted Answer

f⁻¹(x) = (x - 6)/2

Answer

f⁻¹(x) = 2x - 6

Answer

f⁻¹(x) = (x + 6)/2

Answer

f⁻¹(x) = x/2 + 6

Question 6

An even function satisfies:

Accepted Answer

f(-x) = f(x)

Answer

f(-x) = -f(x)

Answer

f(x + 1) = f(x)

Answer

f(0) = 0