Think you’ve got your head wrapped around **Functions**? Put your knowledge to
the test. Good luck — the Stickman is counting on you!

Q. Which of the following could be the graph of *y* = (*x* – 1)(*x* + 2)?

image

None of them.

Q. What are the *x*-intercepts of the function *y* = - 3*x*^{2} – 6*x* + 24?

4, -2

-6, 4

-4, 2

6, -4

This function has no *x*-intercepts.

Q. What is the vertex of the parabola given by the equation *y* = 4*x*^{2} + 9*x* + 6?

This parabola has no vertex.

Q. Which of the following statements is false?

The graph of a quadratic function need not have any *x*-intercepts.

The graph of a quadratic function can have multiple *y*-intercepts.

The graph of a quadratic function must have exactly one vertex.

The graph of a quadratic function must cross the *y* axis at least once.

You can't ask your calculator the answer to this one, because it doesn't do so well with non-number problems.

Q. Which of the following could be the graph of the function *y* = -(*x*^{2} + 1)?

None of them.

Q. Which of the following could be the graph of the function *y* = -3^{-x}?

*u*(*x*)

None of them.

Q. Which of the following could be the graph of the function *y* = 5 – 3^{x}?

None of them.

Q. Which of the following points is in the relation described by the inequality ?

(6, -1)

(0, -1)

(-2, -2)

(-1, 2)

(2, 0)

Q. Which of the following could be the graph of the inequality *y* > 7*x* – 6?

Inequality 1

Inequality 2

Inequality 3

Inequality 4

None of them.

Q. Which of the following could be the graph of the inequality -*x* ≥ 4?

Inequality 1

Inequality 2

Inequality 3

Inequality 4

None of them.