Practice with
 Functions
Topic Index | Algebra Index | Regents Exam Prep Center

 

Choose the best answer for each question:

1.

Which of the relations below is a function?   

Choose:

{(2,3), (3,4), (5,1), (6,2), (2,4)}
 {(2,3), (3,4), (5,1), (6,2), (7,3)}
 {(2,3), (3,4), (5,1), (6,2), (3,3)}

 

 

2.

Given the relation A = {(5,2), (7,4), (9,10), (x, 5)}.  Which of the following values for x will make relation A a function? 

Choose:

7
 9
 4

 

 

3.

The following relation is a function.
{(10,12), (5,3), (15, 10), (5,6), (1,0)} 

 

Choose:

True
 False

 

 

4.

Which of the relations below is a function?

Choose:

{(1,1), (2,1), (3,1), (4,1), (5,1)}
 {(2,1), (2,2), (2,3), (2,4), (2,5)}
 {(0,2), (0,3), (0,4), (0,5), (0,6)}

 

 

5.

The graph of a relation is shown at the right.  Is this relation a function?

Choose:

Yes
 No
 Cannot be determined from a graph

 

 

6.

Is the relation depicted in the chart below a function?

X 0 1 3 5 3 9
Y 8 9 10 6 10 7
 

Choose:

Yes
   No
   Cannot be determined from a chart

 

 

7.

The graph of a relation is shown at the right.  Is the relation is a function?

Choose:

Yes
 No
 Cannot be determined from a graph

 

 

8.

Is the relation depicted in the chart below a function?

X -2 -1 0 1 2 3
Y 5 5 5 5 5 5

Choose:

Yes
 No
 Cannot be determined from a chart

 

 

9.


The graph of a relation is shown at the left.
Is the relation a function?
 

Choose:

Yes
 No
  Cannot be determined from a graph

 

 

10.


The graph of a relation is shown at the right.
Is the relation a function?

Choose:

Yes 
No
 Cannot be determined from a graph

 

 

11.

Given f (x) = 3x + 7,  find  f (5).

Choose:

15
22
42

 

 

12.

Given f (x) = 2x² - 3x + 6,  find  f (2.5).

Choose:

11
 23.5
76

 


 

13.

Which graph represents a function?

Choose: