Choose the best
answer for each question:
1. 
Which of the relations below is a
function? 
Choose:



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:


3. 

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


Choose:


4. 
Which of the relations below is a
function? 
Choose:



5. 
The graph of a
relation is shown at the right. Is this
relation a function? 

Choose:


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:


7. 
The graph of a
relation is shown at the right. Is the
relation is a function? 

Choose:


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:


9. 

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

Choose:


10. 
The graph of a relation is shown at the right.
Is the relation a function? 

Choose:


11. 
Given f (x) = 3x
+ 7, find f (5). 
Choose:



12. 
Given f (x) = 2x²
 3x + 6, find f (2.5). 
Choose:



13. 
Which graph represents a function? 
Choose:



