Functions and Scatter Plots Review

The equation of the line of best fit is

y = -0.7x + 8.3

Predict the hours of sleep for someone who drinks 11 cups of coffee.

• 0 hours

• 0.6 hours

• 1.1 hours

• -0.7 hours

Select ALL words that describe the association.

• Linear

• Nonlinear

• Strong

• Weak

Describe the association.

• Positive

• Negative

• No association

Predict the hours of sleep for someone who drinks 6 cups of coffee.

• 3.5

• 4.2

• 5.0

• 5.8

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Does the following represent a function?

{(-7,0), (8,-4), (-8,-8), (5,1), (-8,9)}

• Yes

• No

Which table does not represent a function?

• 
• 
• 
• 

Which equation represents the following graph?

• y = 3x + 2

• y = -2x + 3

• y = 2x + 3

• y = -3x + 2

What is the slope?

• -2/3

• 1/3

• 2/3

• 3/1

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above