Scatterplots and Functions

Functions and Scatterplots Retest

• x CANNOT repeat for a function.

• Graphs- vertical line test

• Bubble Mapping- one line connected to an x.

• Table- x cannot repeat
  

Identifying Functions

Multiple Choice

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values paired with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values paired with it.

• No, because each x-value has only one y-value paired with it.

Multiple Choice

Is this table a function or not a function?

• Function

• Not a Function

Multiple Choice

Is this graph a function or not a function?

• Function

• Not a Function

You can use trend lines (or line of fit) to predict other values of y or x.

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Scatter Plots

Multiple Choice

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

Multiple Choice

What type of association does this graph have?

• positive
• negative
• none
• all of the above

Multiple Choice

Make a prediction for a resting heart rate after 6 hours of exercise a week.

• 6
• 50
• 55
• 59

Multiple Choice

If the carpenter worked for 6 days, how much did he earn?

• 1250
• 1500
• 1750
• 2000