Functions and Function Notations

Given f(x) = x² - 1, what is the value of f(10)?

• 100

• 101

• 99

• 9

Given f(x)= (2 + x )², what is the value of f(-3)?

• 1

• 25

• -1

• 5

Given f(x) = 3(6 -x), what is the value of f(-8)

• -42

• 6

• -6

• 42

A relation where every input in matches with exactly one output is called what?

• Relation

• Linear

• Exponential

• Function

Derek works at Subway making $9.25 an hour.  The function d(x)=9.25x tells us how much money Derek makes after x hours of working.  What is the meaning of d(4)=37?

• After 4 hours of work, Derek makes $37.

• Derek needs $4 more to have $37 total.

• After working for 4 days, Derek makes $37 total.

• After 4 hours of work, Derek now makes $37 an hour instead of $9.25.

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

What type of function is shown?

• absolute value

• quadratic

• linear

• exponential

• 1

• -2

• 0

• 4

A mapping is shown in the diagram above.

This mapping is.....

• a function, because Feb has two outputs, 28 and 29

• a function, because two inputs, Jan and Mar, result in the output 31

• not a function, because Feb has two outputs, 28 and 29

• not a function, because two inputs, Jan and Mar, result in the output 31

• Lynn, only

• Jude, only

• Anne, only

• Both Lynn and Jude