Linear and Nonlinear Models

Which scatter plot shows two variables with a nonlinear association?

• 
• 
• 
• 

Which phrase best describes the data of this scatter plot?

• linear association with clustering

• positive nonlinear association

• nonlinear association with outliers

• negative linear association

Which shows a scatter plot with the most accurate line-of-best fit?

• w

• x

• y

• z

Which line best models the data?

• A

• B

• C

• D

Which scatter plot has the strongest linear association?

• A

• B

• C

• D

A student buys 1 ticket for a movie and then buys x snacks. The equation y=1.50x+12.75 represents the total amount of money the student spends, y.

Which statements are true?

• Each snack costs $1.50

• Each snack costs $12.75

• The movie ticket cost $1.50

• The movie ticket cost $12.75

• The total cost of one ticket and one snack is $13.75

A student buys 1 ticket for a movie and then buys x snacks. The equation y=2.75x + 8.25 represents the total amount of money the student spends, y.

Which statements are true?

• Each snack costs $2.75

• Each snack costs $8.25

• The movie ticket cost $8.25

• The movie ticket cost $2.75

• The total cost of one ticket and one snack is $11.00

Which linear equation best models this relationship?

The scatter plot shown has a line of best fit.

What is the predicted value when x is 8?

• 5

• 2

• 8

• 10

A scatter plot suggests a positive linear association. Which could be the scenario represented by this scatter plot?

• The greater the amount of rainfall, the more umbrellas sold.

• The higher the outdoor temperature, the less time for the clothes to dry on the line.

• The more hours John spends playing video games, the worst his grades get.

• The more Molly spends at the mall, the less she has in her savings.