Question 1

When x increases from a to a + 2, y increases by a factor of 16. For which functions is this statement true?

Accepted Answer

y = 2(4)^x

Answer

y = 2(16)^x

Answer

y = 4x + 2

Answer

y = 16x + 2

Question 2

Complete the square to transform the quadratic equation into the form 
(x – p)^2 = q.

Accepted Answer

(x - 3)² = 23

Answer

(x - 6)² = -9

Answer

(x - 6)² = 9

Answer

(x - 3)² = -23

Question 3

Write the quadratic function f(x) = x^2 + 8x +3 in vertex form.

Accepted Answer

f(x) = (x + 4)^2 - 13

Answer

f(x) = (x-4)^2 +3

Answer

f(x) = (x+4)^2 + 3

Answer

f(x) = (x-4)^2 -13

Question 4

What is the vertex of this quadratic function?

Accepted Answer

(2,-9)

Answer

(4,-5)

Answer

(-2,5)

Answer

(0,5)

Question 5

Which of the quadratics has a graph with only one x-intercept?

Accepted Answer

y = x² - 8x + 16

Answer

y = 2x² +4

Answer

y = 2x² - 8x + 20

Answer

y = -2(x - 1)² + 2

Question 6

Jen graphs y = -½ x + 8. Which point is on the line?

Accepted Answer

(6,5)

Answer

(8, -4)

Answer

(-8, 2)

Answer

(4, -6)

Question 7

Where is the function decreasing?

Accepted Answer

-2 < x < 0.5

Answer

-∞ < x < 0.5

Answer

-2 ≤ x < 0.5

Answer

1.75 < x < ∞

Question 8

If a is a rational number and b is an irrational number, then the sum a + b is

Accepted Answer

Irrational

Answer

Imaginary

Answer

Rational

Answer

An integer

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