Introductions to Functions

Find f(2)

• 5

• 4

• 3

• 0

g(x) = 3x + 1
g(10) = ______

Which graph is not a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

f(x) is the same thing as ______.

• y

• x

• input

• an equation

Is this graph a function or not a function? (Use the vertical line test)

• Function

• Not a Function

• -67

• 67

• 77

• -77

Tyler is filling a bathtub with water. Function B gives the depth of the water, in inches, t minutes after he begins filling the tub. Explain the meaning of B(9) = 11.

• The temperature of the water is 11 after 9 minutes.

• The tub has 9 inches of water after 11 minutes.

• The tub has 11 inches of water after 9 minutes.

Determine f(-1).

• -10

• -7

• -4

• -1

• 2

Determine f(4).

• 0.5

• 16

Explain the meaning of f(4) = 16.

• The height is 16 feet at 4 seconds.

• The height is 4 feet at 16 seconds.