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Which of the relations below is a function?

• {(2, 3), (3, 4), (5, 1), (2, 4)}

• {(2, 3), (3, 4), (6, 2), (7, 3)}

• {(2, 3), ( 3, 4), (6, 2), (3, 3)}

Which set is a relation but NOT a function?

• {(1,2), (2,2), (3,5), (6,7)}
• {(1,1), (1,3), (1,5), (1,8)}
• {(6,5), (7,8), (8,0), (6,5)}
• A horizontal line

A set of ordered pairs is called what?

• Coordinates
• Relation
• Function
• Vertical Line Test

A relation where every input yields one and only one output is called what?

• Relation
• Linear
• Exponential
• Function

{(1,2), (3,4), (1, X)}

In order for this relation to be a function X must equal what?

• 1

• 2

• 3

• 4

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

Which set of ordered pairs is a relation AND a function?

• {(1,2), (2,3), (2,4)}
• {(1,2), (2,2), (3,2)}
• {(1,2), (1,3), (1,4)}
• {(1,5), (5,1), (1, 1/5)}

Which type of line is NOT a function?

• Vertical
• Horizontal
• Negative Slope
• Positive Slope

Which graph passes the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

In a function how many different outputs can a single input have?

• Infinite
• Zero
• One
• Two