Domain & Range
Is this table/graph a function?
Evaluating Function Rules
Evaluate Function Graphs
Word problems
100
Identify the Domain and Range
D: -2 ≤ x ≤ 2
R: 0 ≤ y ≤ 4
100
Function? Yes or no? 
NO.
100
Evaluate f(2) if f(x)=-3x
f(2) = -6
100
f(1)=
f(0)=2
100
Your business of selling tape dispensers has fixed startup costs of $5,000 and variable costs of $7.25 per tape dispenser, p. The linear model for this business is f(p) = 7.25p + 5,000.
What does f(100)=5725 mean?
It costs $5725 to make 100 tape dispensers.
200
Identify the Domain and Range
D: {1, 2, 3, 4, 5, 6}
R: {-1, 0, 1, 2, 3, 6}
200
Function? YES OR NO? 
NO.
200
Evaluate f(7) if f(x)= -4x-2
f(7) = -30
200
f(-3)=
f(-3)=0
200
Jose inherited a bank account form his grandmother that had a balance of $2,300. He withdrew $320 per month to pay his car loan, but did not withdraw anything else, or deposit anything into this account. A function for this situation is b(m)=-320m + 2300.
What does b(5)=700 mean?
After 5 months Jose has $700.
300
Identify the Domain and Range
D: -4 < x < infty
R: 1 \leq y < infty
300
EXPLAIN. Why is this graph a function? 
Because when you create a vertical line anywhere on the graph, it will only touch the graph ONCE. (It passes the VERTICAL LINE TEST)
300
Evaluate f(-6) if f(x)=x2 - 9
f(-6) = 27
300
f(2)=
f(2)=5
300
A plumber charges $50 for a service call plus $30 per hour of service. A function can be written as f(h)=50+30h.
Find and interpret f(10).
f(10)=350
After 10 hours of work it costs $350.
400
Identify the Domain and Range
D: {3, 5}
R: {7, 8, 9}
400
Give an x-value to make the table not a function
x=-4, -3, or 0
400
Evaluate f(x)=9 if f(x)=25 - 4x
x = 4
400
f(x)=0
x=0
400
An airplane 30,000 feet above the ground is descending at a constant rate of 1550 feet per minute. A function can be written as A(m)=30,000-1550m.
Find and interpret A(m)=16,050
m = 9 minutes
After 9 minutes of descending, the plan is at 16,050 feet.
500
Identify the Domain and Range
Domain: All Real Numbers
Range:
-5 \leq y < infty
500
On your board, create a shape that is not a function
.
500
Evaluate f(x)=42 if f(x)=3x+15
x = 9
500
f(x)=-4
x=2
500
Beth budgeted $750 to buy school supplies for her classes this school year, out of her own money, and due to the budget crisis problems she is spending $125 per month on school supplies. A function can be written as B(m)=-125m+750
Find and interpret B(m)=0
x=6 months
After 6 months Beth will have $0