Step Functions and Absolute Functions

A functions is graphed on the set of axes below.

• 
• 
• 
• 

• 1

• 0

• 2

• 3

• open circles at (3,15) and (3,13)

• closed circles at (3,15) and (3,13)

• an open circle at (3,15) and a closed circle at (3,13)

• a closed circle at (3,15) and an open circle at (3,13)

Does the following relation represent a function?

• yes it passes the vertical line test

• no it doesn't pass the vertical line test

• yes it passes the horizontal line test

• no it doesn't pass the horizontal line test

Evaluate f(0)

• 2

• -1

• 1

• 4

• 
• 
• 
•