Introduction to Functions

Which graph is not a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

You can identify a function from a graph by using the.....

• Horizontal Line Test

• Eye Test

• Vertical Line Test

• Diagonal Line Test

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

• Function

• Not a Function

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

• Function

• Not a Function

• -67

• 67

• 77

• -77

Find f(3)

• 5

• 4

• 3

• 0

Determine f(-1).

• -10

• -7

• -4

• -1

• 2

Solve f(x) = -1

• -2

• -1

• 0

• 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.