Functions CW/HW 8

1. Which of the following relations below is a function?
1. {(2,3), (3,4), (5,1), (6,2), (2,4)}
2. {(2,3), (3,4), (5,1), (6,2), (7,3)}
3. {(2,3), (3,4), (5,1), (6,2), (3,3)}

Explain your reasoning: ________________________________________________________________________________________________________________________________________________

2. Given the relation A = {(5,2), (7,4), (9,10), (x, 5)}.  Which of the following values for x will make relation Aa function? 
1. 7
2. 9
3. 4

Explain your reasoning:

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

Explain your reasoning:

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4. The graph of a relation is shown at the right.  Is this relation a function?
1. Yes
2. No
3. Cannot be determined from a graph

Explain your reasoning:

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5. Is the relation depicted in the chart to the right a function?

1. X 0 1 3 5 3 9 Y 8 9 10 6 10 7

   Yes
2. No
3. Cannot be determined from a chart

Explain your reasoning:

______________________

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6. The graph of a relation is shown at the right.  Is the relation is a function?
1. Yes
2. No
3. Cannot be Determined

Explain your

Reasoning:

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

   Is the relation depicted to the right a function?
1. Yes
2. No
3. Cannot be Determined

Explain your

Reasoning:

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8. The graph of a relation is shown at the right. Is the relation a function?
1. Yes
2. No
3. Cannot be Determined

Explain your

Reasoning:

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