Function or Not 
No, -7 gives two different outputs
Is this a function?

Yes, it passes the VLT
What is the y-intercept of the function:
y = 2/3x - 10
-10
Evaluate the function at x = 2
y=3x+10
16
When was this person standing still?

5 - 9 seconds
Function on not?
X is not repeating, automatically YES

No, it doesn't pass the vertical line test.
What is the function rule for the graph?

y=-1/2x-3
Evaluate
f(3)=4x-1
11
When were they walking the slowest?

11 - 18 seconds
Function or not?

Yes, different inputs can have the same output (Costco water vending machine)
Function or Not

No, it does not pass the Vertical line test
How much money does Roy start his day with?

$40
Evaluate
f(-2)=x+5
3
What does the initial value (0,500) represent?

They started 500 feet away from home.
Function or Not?
Yes, x is NOT repeating.
Do these ordered pairs represent a function?
{ (2,2) , (3,3) , (4,4) , (2,2) , (5,5) , (6,6) }
Yes, each input has exactly one output.
How much does Roy make per hour?

$20
The function below represents how much money Roy has saved over time. How much will he have saved after 10 weeks?
y=30x+50
350
Describe the actions of this person. Are they walking/running/standing? Towards or away from home?

walking away from home (0-6 mins)
standing still (6 - 9 mins)
run home (9 - 12 mins)

Yes, this is a function
Insert a value for the variable y so that the relation IS A FUNCTION.
(3,5) , (5,3) , (6,20) , (5,y)
y = 3
Write a function rule for the table.

The function below represents the amount of water, y, in a tank after x seconds have passed. How much water is in the tank after 10 seconds?
y=-5x+200
150
How long did it take them to drive 200 miles?

4 hours