Function Notation and Interval Notation

f(x)=4x+5
f(4)=

• 21

• -11

• -31

• 25

What is the value of f(0)?

• -2

• 2

• 4

• 0

Which statement is FALSE?

• f(4) = 16

• f(8) = 16

• f(6) = 18

• f(18) = 6

Express the following in Interval Notation
-9 < x ≤ -4

• [-9, -4]

• (-9,-4]

• [-9, -4]

• (-9,-4)

Explain the meaning of f(4) = 16.

• The height is 16 feet at 4 seconds.

• The height is 4 feet at 16 seconds.

What is the domain of the function?

• (3, ∞)

• [-3, ∞)

• (-∞, 4]

• (-∞, 4)

• [0, 3]

• (0, 3)

• [0, 3)

• (0, 3]

Function d gives the distance of a boat from the dock t seconds after leaving the dock. Distance is measured in meters. Here is a graph that represents d. Select all statements in function notation that represent the situation.

• d(0) = 170

• d(30) = d(70)

• d(t) = 10 when t is 20

• d(170) = 0

• d(0) = 0

What is the domain in Interval notation?

• [ -2 , 2 ]

• [ 4 , -4 ]

• -2 ≤ x ≤ 2

• 4 ≥ y ≥ -4

What is the Domain of this function?

• [0,6]

• [-6,6]

• [3,6]

• [4,3]