FUNction Knowledge Check

Evaluate f(x) = 2x + 3 for x = 4

• 11

• 10

• 9

• 8

What is the domain of f(x) = √x ?

• x ≥ 0

• x > 0

• x ≤ 0

• x < 0

If f(x) = 3x - 5, what is f(2)?

• 1

• 2

• 3

• 4

Is y = 2x + 1 a function?

• True

• False

Evaluate g(x) = x² - 4 for x = -3

• -13

• 5

• 9

• -5

What is the range of h(x) = x² - 9?

• (-∞, -9]

• (-∞, 9]

• [9, ∞)

• [-9, ∞)

What is the value of g(5) for g(x) = 4x + 7?

• 27

• 20

• 25

• 30

Identify the dependent variable in f(x) = 3x - 2

• f(x)

• x

• 3

• -2

Evaluate h(x) = x² - 1?

• x² - 1

• x² + 1

• x - 1

• x + 1

What is the range of h(x) = x² - 1?

• (-∞, -1)

• (-1, ∞)

• [-1, ∞)

• (-∞, ∞)