Algebra 1 Benchmark # 5

Which of the following set of ordered pairs is

a function?

 {(-1, 1), (0, 3), (2, 7), (3, 9)}

 {(0, 1), (1, 3), (2, 7), (1, -2)}

 {(-1, 3), (0, 3), (-2, 5), (-1, 1)}

 {(2, 1), (2, 2), (2, 3), (2, 4)}
Which table represents a function?
-4
3
5

5

9
x
x
3
3
2
1

1

2

2

y
10
12
10
15
y

7

6
3
5
9
3
5
6
x
x
12
12
10
y
1
2
2
6

3

y

       f(x) = 3x2 - 2x + 5

 

What is the value of f(5)?

 70

 30

 10

  6
Which of the following is not the graph of a function?

Victor's car wash charges different prices for washing

different sizes of cars.  What are the independent

and dependent variables?

 Independent Variable:  car size

     Dependent Variable:  make of car

 Independent Variable:  car size

     Dependent Variable:  price charged

 Independent Variable:  make of car

     Dependent Variable:  car size

 Independent Variable:  price charged

     Dependent Variable:  car size

The graph shows cost of admission to the Oklahoma City Zoo for people

of ages 0 to 70.  What is the domain and range of the data shown on the graph?

 Domain: all real numbers, Range: all real numbers

 Domain: 0 ≤ x ≤ 70, Range: 0 ≤ y ≤ 4

 Domain: 0 ≤ x ≤ 70, Range: 0 ≤ y ≤ 7

 Domain:  0 ≤ y ≤ 7, Range: 0 ≤ x ≤ 70
8
7
6
3
5
4
2
1
5   10  15  20  25  30  35  40  45   50  55  60  65 70
What is the range of the function given in the graph?

 {1, 1, -2, -2}

 {1, -3, 2, -1}

 {-2, -1, 1, 3}

 {1, 1, -2, 2}

If f(x) = x - 5, which expression represents

f(2x + 1)?

 2x - 4

 2x + 11

 2x + 4

 2x - 9
The graph of the function f(x) is shown.
What is f(3)?

 -5

 -2

  1

  2

The function f(x) is linear.

What is the value of f(5)?

 -5

  3

 17

 20
-1
-3
1
x
f(x)
11
14
8
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