Quadratic Functions: Vertex Form — Unit test

Question 1

The graph of an exponential function and a linear function are shown below. Exponential Linear Which statement is true about the functions?

Revolt · Accepted Answer

The exponential function is generally growing faster than the linear function.

Question 2

What is the y-value of the vertex of the function f(x)=−(x+8)(x−14)?

Revolt · Accepted Answer

121

Question 3

What is the range of the function f(x) = −(x + 3)2 + 7?

Revolt · Accepted Answer

all real numbers less than or equal to 7

Question 4

Over which interval does the exponential show a more rapid rate of change?

Revolt · Accepted Answer

mc025-4.jpg

Question 5

The function f(x) = x2 is translated 7 units to the left and 3 units down to form the function g(x). Which represents g(x)?

Revolt · Accepted Answer

g(x) = (x + 7)2 − 3

Question 6

The function f(x) = –x2 – 4x + 5 is shown on the graph.

Revolt · Accepted Answer

The range of the function is all real numbers less than or equal to 9.

Question 7

Which type of function is represented by the table of values below?xy14216364425651,024

Revolt · Accepted Answer

exponential

Question 8

Which rule can be used to describe the growth of the y-values of the function over each interval from to ?

Revolt · Accepted Answer

multiply by 12

Question 9

What are the x-intercepts of the graph of the function f(x) = x2 + 5x − 36?

Revolt · Accepted Answer

(4, 0) and (−9, 0)

Question 10

three

Revolt · Accepted Answer

The vertex is the maximum value.; The axis of symmetry is x = .; The domain is all real numbers.

Quadratic Functions: Vertex Form — Unit test Answers