Unit 6 Review

Which statement is a correct interpretation of the slope of the line in the graph?

• The CO₂ car traveled 5 seconds per foot.

• The CO₂ car traveled 5 feet per second.

• The CO₂ car traveled 2.5 seconds per foot.

• The CO₂ car traveled 2.5 feet per second.

Which graph represents the relationship between the number of hours Michael works and his total pay, showing the amount of money Michael will be paid per hour?

• Graph F: Michael is paid $7.50 per hour.

• Graph G: Michael is paid $5.00 per hour.

• Graph H: Michael is paid $7.50 per hour.

• Graph J: Michael is paid $15.00 per hour.

The scatterplot shows the relationship between the number of hot dogs left over after the cook-out and the number of people who attended a cook-out. Based on the trend line, approximately how many hot dogs would be remaining if only 18 people attended the cook-out?

• 13 hot dogs

• 7 hot dogs

• 2 hot dogs

• 0 hot dogs

Based on the scatterplot, approximately how many potatoes are in a 15-pound bag?

• 8 potatoes

• 15 potatoes

• 45 potatoes

• 50 potatoes

The table displays the approximate number of centimeters, y, in x inches.

Which equation can be used to determine the number of centimeters, y, in x inches?

• x = 2.54y

• y = x/2.54

• y = 2.54x

• y = x + 1.54

Lisa’s school requires each student to earn 75 hours of community service each year. Lisa has already earned 27 hours. She plans to earn the remainder of her hours by volunteering at a nursing home. She will spend 2 hours at the nursing home per visit. Which equation represents the number of visits, v , that Lisa will need to make to fulfill her community service requirement?

• v + 27(2) = 75

• v/2+ 27 = 75

• 27v + 2 = 75

• 2v + 27 = 75

Which table can be generated from the equation

y = 2x + 1 ?

• Table A

• Table B

• Table C

• Table D

What type of relationship between x and y is shown in the graph?

• Proportional

• Linear

• Non-linear

• Constant

Which statement about Scatterplot A and Scatterplot B is true?

• Scatterplot A suggests a nonlinear relationship between x and y, and Scatterplot B suggests a nonlinear relationship between x and y.

• Scatterplot A suggests a linear relationship between x and y, and Scatterplot B suggests a nonlinear relationship between x and y.

• Scatterplot A suggests a nonlinear relationship between x and y, and Scatterplot B suggests a linear relationship between x and y.

• Scatterplot A suggests a linear relationship between x and y, and Scatterplot B suggests a linear relationship between x and y.

Which conclusion best supports the data plotted in the graph?

• There is a positive linear association between time spent watching television and grade averages.

• There is a non-linear association between time spent watching television and grade averages.

• There is a negative linear association between time spent watching television and grade averages.

• There is no association between time spent watching television and grade averages.