Functions

Which graph story goes with this graph?

A)A) A person leaves home, drives through town, then on the highway, and finally stops at a rest area.

B)B) A person leaves home, drives to the other end of town and buys groceries, then returns home.

C)C) A person walks to a friend’s house where she stays overnight.

Which of the following relations are functions?

A)A) #1, 2, and 3 E)E) #1 only

B)B) #1 and 3 only F)F) #1 and 2 only

C)C) #2 and 3 only G)G) #2 only

D)D) #3 only

Is the given relation Discrete or Continuous and is it a Function or Not a Function?

A)A) Discrete, Not a Function

B)B) Discrete, Function

C)C) Continuous, Function

D)D) Continuous, Not a Function

Which is the correct RANGE for the relation?

A)A) {4}

B)B) All x-values from 0 to 3

C)C) {0, 1, 2, 3}

D)D) All y-values from 0 to 3

Giselle is going to rent a scooter for at least one hour. The fee is $45 plus $5 for each hour it is rented.

A)A) Indep: total fee Depend: # of hours

B)B) Indep: cost per hr Depend: total fee

C)C) Indep: scooters Depend: # of hours

D)D) Indep: # of hours Depend: total fee

Identify the Independent and Dependent variables for this situation.

Which shows the BEST mapping for the relation:{(2, 3), (-2, 3), (2, 5), (1, 5)}?

A)A) B)B) C)C) 2

-2

2

1

3

3

5

5

2

-2

1

3

3

5

5

2

-2

1

3

5

Choose the graph that best represents this situation.

A)A) B)B) C)C)

The temperature of the water in a glass cooled down steadily with the addition of ice, then remained constant when all the ice had melted.

Is the given relation Discrete or Continuous and what is its Domain?

A)A) Discrete, D: {-2, -1, 0}

B)B) Discrete, D: {-5, -3, 1, 3}

C)C) Continuous, D: E.F. -5 to 3

D)D) Continuous, D: {-2, -1, 0}

Give 3 reasonable domain values and the range values that go with them for the given situation.

Meg earns a $5 flat fee plus $4.50 per student for a tutoring session.

A)A) D: {-2, -1, 0} R: {-4, .50, 5}

B)B) D: {1, 2.75, 5} R: {9.5, 17.375, 27.5}

C)C) D: {1, 2, 3} R: {4, 5, 6}

D)D) D: {2, 4, 8} R: {14, 23, 41}

A cell phone plan has an initial activation fee plus a monthly charge. Using the table, determine the

cost if you have not used the phone yet.

Number of Months, x

Total Amount Paid ($), y

2 150

4 240

5 285

8 420

A)A) $45

B)B) $60

C)C) $0

D)D) $150