Functions on Tables and Graphs

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

Is this mapping a function or not a function? 

• Function

• Not a Function

Which of the following situations
corresponds to this graph? 

• A bicyclist accelerates from a stop, travels at a constant speed, then slows to a stop.

• A car accelerates from a stop,
  travels at a constant speed, slows,
  and then travels at a slower speed.

Is this table a function?  Explain.

• Yes, because none of the inputs repeat.

• Yes, because the inputs repeat but have the same output

• No because the inputs repeat

• No because the inputs repeat and have different outputs

Is this table a function?  Why?

• Yes, because none of the inputs repeat.

• Yes, because the inputs repeat but have the same output.

• No, because the inputs repeat and have different outputs.

The graph shows the height (cm) of a candle, y, as it burns over x hours, what does the x-intercept (4.5,0) mean?

• The candle is 4.5 cm tall after a couple of hours.

• Candle start at 4.5 cm,

• The candle is 0 cm after 4.5 hours.

• The candle burns at 4.5 cm per hour.

Which of these tables represent a function?

• A

• B

• C

• D

• all of the above

Is this table a function and how can you tell?

• Yes its a function because there are not variables for missing numbers

• No it's not a function because the y value 4 repeated

• No it isn't a function because the x value 2 is repeated

• No it's not a function because the x value 5 has y values of  10 & 12

Match the graph to the correct table.

• 
• 
• 

Which graph represents the table?

• 
• 
• 
•