Function Notation Writing Functions

Write the following in function notation.

A doctor measured a patient’s resting pulse rate at 80 beats per minute.

• f(x) = 80y

• f(y) = 80y

• f(x)=80x

Write the following in function notation.

A Pizza restaurant offers the following deal $8.99 for on large pizza and $5 for each additional large pizza on the same order

• f(x) = 8.99x + 5

• f(x) = 5x + 8.99

• f(x) = 5x - 8.99

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5

• x = 5

• x = -50

• x = 30

Is this a function?

• Yes

• No

• Let me ask my dog...

• Why are there letters in math?

Is this a function?

• Yes

• No

• I'm Confused

• May I phone a friend?

f(x) is the same thing as ______.

• y

• x

• input

• an equation

Is this a function?

• Yes

• No

• I bet Ms. Byrd is laughing at me? maybe it's a trick!

• Why is this so easy?

Given the function, f, shown on the graph, what is the value of f(3)?

• 0

• 2

• 6

• 1