National Mathematics Program Pre-Test

Which of the following is a function?

• x=3

• y²=9

• y=x+2

• |x|+ |y| = 1

The y-intercept of a polynomial function is:

• Where the graph crosses the y-axis

• The highest point on the graph

• Where the graph crosses the x-axis

• The lowest point on the graph

Find the domain of f(x)=2x+5.

• All real numbers

• x≠-5

• x>0

• Integers only

If x-2 is a factor of polynomial, then:

• 2 is the y-intercept

• -2 is an x-intercept

• 2 is an x-intercept

• -2 is the y-intercept

Evaluate f(5) if f(x)=x²-3x+1.

• 3

• 11

• 7

• -1

Which ordered pair lies on the graph y=x²+2x?

• (-1, 1)

• (0, 0)

• (1, 1)

• (2, 7)

The graph of y=x³ is:

• Always increasing

• Always decreasing

• Neither increasing nor decreasing

• Increasing, then decreasing

Which describes the graph of an odd-degree polynomial with positive leading coefficient?

• Falls left, rises right

• Rises both ends

• Rises left, falls right

• Falls both ends

Factor completely: x²-9.

• (x-9)(x+1)

• (x+9)(x-9)

• (x+3)²

• (x+3)(x-3)

What are the zeros of x²+5x+6=0?

• -2, -3

• -1, -6

• 2, 3

• -2, 3