Quiz about Representing and Interpreting Functions

Question 1

Is this a function?

Accepted Answer

Yes, because every input has exactly one output

Answer

No, because -1 has more than one output

Answer

No, because 3 is in the input and the output

Question 2

What is a rule that assigns exactly one output to ever input?

Accepted Answer

function

Answer

mapping diagram

Answer

table

Answer

function notation

Question 3

Is this a function?

Accepted Answer

No, because 15 has more than one output

Answer

Yes, because 15 is assigned the output value of 7 and 9

Answer

No, because -1, 0, and 15 have the same output value of 9

Question 4

Is the table on the left a function?

Accepted Answer

Yes, because every input has exactly one output

Answer

No, because 1 and 3 have the same output value

Question 5

Which of the following represents a function?

Accepted Answer

$$\{(1,2), (3,4), (5,6)\}$$

Answer

$$\{(2,3), (4,5), (2,6)\}$$

Answer

$$\{(7,8), (7,9), (10,11)\}$$

Answer

$$\{(12,13), (14,15), (12,16)\}$$

Question 6

Sam joins a chocolate club for $22. He pays $0.35 per ounce of chocolate after he has paid the membership fee. What function represents this situation?

Accepted Answer

f(x) = 0.35x +22

Answer

f(x) = 0.35y + 22

Answer

f(x) = 0.35x - 22

Answer

f(y) = 0.35x + 22

Question 7

The school booster club is in charge of a new set of sweatshirts for the new school year. A local business charges $40 to set up the logo with the design and $4.50 in materials per sweatshirt printed. Write a function to represent the average cost per sweatshirt.

Accepted Answer

$$C\left(x\right)\ =\ \frac{40\ +4.50x\ }{x}$$

Answer

$$C\left(x\right)\ =\ 40\ +4.50x\ $$

Answer

$$C\left(x\right)\ =\ \frac{40x+4.50\ }{x}$$

Answer

$$C\left(x\right)\ =\ 40x\ +4.50$$

Question 8

Is the table on the right a function?

Accepted Answer

No, because 4 has more than one output

Answer

No, because not every input has exactly one outout

Answer

Yes, because every input has exactly one output

Question 9

Evaluate the function rule:
y = 5 x - 2 for x = 3

Accepted Answer

y = 13

Answer

y = 12

Answer

y = 11.5

Answer

y = 17

Question 10

Evaluate the function rule:
y = 6(x - 6) for x = 7

Accepted Answer

y = 6

Answer

y = 36

Answer

y = 1

Answer

y = 7

Question 11

find the range of the function when the domain is { -3, 0 , 3 }
t = 2 s

Accepted Answer

range : { -6 , 0 , 6 }

Answer

range : { 12 , 1 , - 12 }

Answer

range : { 10 , 11 , 12 }

Question 12

Find the range of the function when the domain is { 2 , 4 , 6 }
s = 3 t + 1

Accepted Answer

range: { 7 , 13, 19}

Answer

range: { 6 , 8 , 12 }

Answer

range: {12, 16 , 18 }

Question 13

Evaluate the function rule:
y = x - 1 for x = -2

Accepted Answer

y = 3

Answer

y = -3

Answer

y = 4

Answer

y = -4

Question 14

Evaluate the function:
y = 3x + 2 for x = 5

Accepted Answer

y = 17

Answer

y = 18

Answer

y = 56

Representing and Interpreting Functions

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