Recognizing Functions

Is this a function? Explain.

• Yes; it passes the horizontal line test.

• No; it is not a straight line.

• Yes; it passes the vertical line test.

• No; there is a line connecting the dots.

Is this table a function or not a function? 

• Function

• Not a Function 

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

Does this mapping diagram represent a function?

• No, because there are repeating input values

• Yes, because there are no repeating input values

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

• Function
• Not a Function

Is this table a function or not a function? 

• Function 

• Not a function 

Increasing, decreasing, or constant?

• Increasing

• decreasing

• constant

Increasing, decreasing, or constant?

• increasing

• decreasing

• constant

Increasing, decreasing, or constant?

• Increasing

• Decreasing

• Constant