Functions and Scatter Plots Review

The equation of the line of best fit is

y = -0.7x + 8.3

What does the slope (-0.7) represent?

• people drink 0.7 cups per day

• people sleep 0.7 hours per day

• people lose 0.7 hours of sleep per cup of coffee

• people drink 0.7 fewer cups of coffee per hour of sleep

Select ALL words that describe the function.

• Linear

• Nonlinear

• Increasing and Decreasing

• Constant

Select ALL words that describe the function.

• Linear

• Nonlinear

• Increasing

• Decreasing

Select ALL words that describe the function.

• Linear

• Nonlinear

• Increasing and Decreasing

• Constant

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

• Yes
• No

• Yes
• No

Is the relation a function? Why.

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

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

• Yes
• No

• Yes
• No