Function Vocab
Solving Functions
Writing Functions
Continuous or Discrete
Is it a Function?
100
True or False?
A relation is a set of ordered pairs
TRUE
100
Evaluate f(x)=-3x if x=2
-6
100
Amanda earns 15 dollars per hour.
f(h)=15(h)
100
Number of pizzas sold by Pizza Hut each day.
discrete
100
Is it a function? {(2, 3), (4, 5), ( -2, 6)}
YES because x does not repeat
200
The set of first coordinates of a relation or a function
Domain
200
Evaluate f(x)=2x+1 if x=-2
-3
200
A delivery driver earns $3.50 per mile driven, plus a daily amount of $75.
f(m)=3.50m+75
200
The age of a baby
continuous
200
Using the vertical line test does the graph of the points (1,3) and (1,5) represent a function?
False, the points fail the vertical line test
300
The set of second coordinates in a relation or a function
range
300
Evaluate f(x)=-3 - x if x=6
-9
300
An Orange Theory sales rep earns $40,000 per year, and receives $500 for every member he converts.
Let m=member converted
f(m)=500m+40,000
300
The length of a telephone call
continous
300
Is it a function?
| x | y |
| 2 | 4 |
| 1 | 5 |
| 2 | 6 |
NO because x repeats
400
A relation that assigns exactly one value in the range (y) to each value in the domain (x)
function
400
Evaluate f(x)=25 + 4x if x=5
45
400
Name the independent variable:
Cost of shipping a package based on its weight
weight of package
(dependent variable is the cost of shipping)
400
the height of a pile of laundry
continous
400
Is it a function?
YES because it passes the Vertical Line Test
500
The test to tell if a graph is a function
Vertical Line Test
500
Evaluate f(x)=-(4x+2) if x=7
-30
500
Elijah already sold $40 worth of tickets for a local raffle. He has 5 tickets left to sell at $5 per ticket.
Write the function notation. THEN, solve for if he sells all 5 tickets.
Let t = tickets sold
f(t)=5t+40
f(5)=5(5)+40
f(5)=65
If Elijah sells 5 tickets, he will make a profit of $65.
500
The number of gallons of milk sold each day at a grocery store
discrete
500
Is it a function? 
NO because it does not pass the Vertical Line Test