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UNIT TEST 3A - Class Review

Total questions: 28

Worksheet time: 1hrs 15mins

Name
Class
Date
1.
Is the relation a function? Why.
a)
Yes, because the x-value 11 has two y-values pair with it.
b)
Yes, because each x-value has only one y-value paired with it.
c)
No, because the x-value 11 has two y-values pair with it.
d)
No, because each x-value has only one y-value paired with it.
2.
a)

It is a function because no vertical lines hit it twice.

b)

It's not a function because a vertical line hits it twice.

c)

It's not a function because no vertical lines hit it twice.

d)

It is a function because a vertical line hits it twice.

3.

Which of the following is a function?

a)

b)

c)

d)

4.
  1. Consider the function given below.

  2. (−𝟔, 𝟕), (−𝟑, 𝟎), (𝟎, 𝟖), (𝟑, 𝟑), (𝟕, −𝟏𝟎)

  3. What point could be added so that it still represents a function?

a)

(−5, 0)

b)

(−3, 2)

c)

(0,6)

d)

(3, −10)

5.

Which TWO represent a function?

a)

{(−6, 1), (−1, 0), (0, 1),
(−1, 2), (3, 5)}

b)

c)

d)

e)

𝒚 = −𝟑𝒙 + 𝟐𝟏

6.

Which of the following is a function? Select two.

a)

b)

c)

d)

e)

7.

Which graph shows the correct line for the table?

a)
b)
c)
8.

Which graph shows the correct line for the table?

a)
b)
c)
9.

What is the relative maximum?

a)

(1,2)

b)

(2,2)

c)

(0,-2)

10.

What is the relative minimum?

a)

(1,2)

b)

(2,2)

c)

(0,-2)

11.
What is the relative max of this function?
a)
x = 5
b)
infinity
c)
there is no relative maximum
d)
2.5 and it occurs at x = 5
12.

What are the Relative Maximums on this graph?

a)

Point A, B and E

b)

Point A, C, and E

c)

Point B, D, and F

d)

Point A, C, D, and F

13.
What are the x- and y- intercepts, respectively, on this graph?
a)
(0,5), (0,5)
b)
(5,0), (5,0)
c)
(5,0), (0,5)
d)
(0,0), (5,0)
14.
What is the y-intercept for the given graph?
a)
-5
b)
5
c)
1
d)
-1
15.
What is the x-intercept shown on the graph?
a)
(2, 0)
b)
(-2, 0)
c)
(0, 3)
d)
(3, 0)
16.

Identify the graph with a x-intercept of -2 and y-intercept of 2

a)
b)
c)
d)
17.
During a snowstorm, John measured the total snowfall accumulated at the end of each hour.  He recorded his results in the table below.  What is the approximate average rate of change of the snowfall between 1 p.m. and 6 p.m.?
a)
0.7 inch/hour
b)
0.9 inch/hour
c)
1.1 inch/hour
d)
1.4 inch/hour
18.

What is the average rate of change between hour 15 and hour 30?

a)

$93.75/hr

b)

$6.25/hr

c)

$43.75/hr

d)

$6.75/hr

19.
What is the average rate of change in the amount of gas sold between hour 3 and hour 8?
a)
390.5 gallons per hour
b)
439.6 gallons per hour
c)
487.2 gallons per hour
d)
890.8 gallons per hour
20.

Function h(x) = x + 4

If your input was 2, what is your output?

a)

x = 7

b)

h(x) = -2

c)

h(x) = 6

d)

x = 6

21.

Function h(x) = x + 4

If your input was 6, what is your output?

a)

h(x) = 10

b)

x = 10

c)

x = 2

d)

h(x) = -3

22.

Function h(x) = x + 4

If your output was 2, what is your input?

a)

h(x) = -2

b)

h(x) =6

c)

x = -2

d)

x = 0

23.

Function h(x) = x + 4

If your output was 7, what is your input?

a)

x = 3

b)

h(x) = 11

c)

x = 2

d)

h(x) = 2

24.

Find f(4)

a)

1

b)

2

c)

3

d)

4

25.

Find f(6)

a)

10

b)

15

c)

20

d)

25

26.
Jason is a plumber.  He charges a $90 service fee plus $50 per hour of labor.  Which equation represents the total cost y of a repair that takes x hours? 
a)
y = 90x + 50
b)
y = 50x + 90
c)
x = 90y + 50
d)
x = 50y + 90
27.

Write the equation that represents this word problem:


Nicholas received $100 for his birthday. He decides to spend $20 per day on whatever he wants.

a)

y= 20x + 100

b)

y= -20x - 100

c)

y= 20x - 100

d)

y= -20x + 100

e)

Answer Not Here

28.

Suppose that a bike rents for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation.

a)

y = 4x + 1.50

b)

y = 1.50x + 4

c)

y = -4x +1.50

d)

y = 4x - 1.50