Function Vocab
Linear Function Word Problems
Relations
Is it a Function?
100
True or False-A relation is a set of ordered pairs
What is TRUE?
100

Write an equation for the following:

It costs $20 to enter the amusement park. Each ride costs 1.50. Let x be the number of rides and y is the cost.

What is 20 +1.50x

What is 1.50x+20

100
State the domain of the function {(4,-2),(-1,1),(2,-3),(3,0)}
What is {4,-1,2,3}?
100
Is it a function? {(2, 3), (4, 5), ( -2, 6)}
What is YES because x does not repeat?
200
The set of first coordinates of a relation or a function
What is Domain?
200

Write an equation for the following:

A plumber charges a $175 service call and an additional $90 an hour. Let x be the number of hours and y is the cost.

What is 175+90x

What is 90x+175

200
State the range of the function {(4,-2),(-1,1),(2,-3),(3,0)}
What is {-2,1,-3,0}?
200
Using the vertical line test does the graph of the points (1,3) and (1,5) represent a function?
What is False, the points fail the vertical line test
300
The set of second coordinates in a relation or a function
What is the range?
300

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the cost, C, after H hours of babysitting.  How much money will she make if she baby-sits 5 hours?

C=3+5h

C=5h+3

$28 for 5 hours

300
Find the domain and range of {(-1,5),(2,3),(4,2),(-1,2)}
What is a domain of {-1,2,4} and a range of {5,3,2}?
300
Is it a function?
x y
2 4
1 5
2 6
What is NO because x repeats?
400
A relation that assigns exactly one value in the range to each value in the domain?
What is a function?
400

Rufus collected 100 pounds of aluminum cans to recycle. He plans to collect an additional 25 pounds each week. Write the equation for the total pounds, P, of aluminum cans after w weeks. How long will it take Rufus to collect 400 pounds of cans?

P=100+25w

P=25w+100

12 weeks for 400 pounds

400
Find the domain and range of {(-3,4),(0,10),(11,8),(4,5)}
What is a domain of {-3,0,11,4} and a range of {4,10,8,5}?
400
Is it a function?
What is YES because it passes the Vertical Line Test?
500
The test to tell if a graph is a function
What is the Vertical Line Test?
500

A video rental store charges a $20 membership fee and $2.50 for each video rented. Write an equation to model this situation. Let x be the number of videos and y is the cost. 

If a new member paid the store $67.50, how many videos were rented?

y=20+2.50x

y=2.50x+20

19 videos

500
Find the domain and range of {(-5,8),(-5,4),(6,9),(3,10)}
What is a domain of {-5,6,3} and a range of {8,4,9,10}?
500
Is it a function?
What is NO because it does not pass the Vertical Line Test?
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