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- 1. Multiple Choice
The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding. What is the equation of the line of best fit?y = -25x + 170y = 25x + 170y = -(5/8) x + 170y = (5/8) x + 170 - 2. Multiple ChoiceThe graph above shows a line of best fit for data collected on the amount earned by waiters and waitresses last week in relation to the number of tables they served. What is the equation of the line of best fit?y = (5/3) x + 375y = (1/3) x + 475y = (5/3) x + 475y = (1/3) x + 375
- 3. Multiple ChoiceA small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside. Based on the trend line, about how many guests should be expected if the temperature is around 80°?8,30087,3009,300
- 4. Multiple ChoiceA group of students did an experiment to see how drinking cups of coffee right before bed affected sleep. The results are shown below in the scatter plot with a line of best fit. Use the given line of best fit to approximate the rate of change relative to the scatter plot.(7/5) hours/cup(5/7) hours/cup- (7/5) hours/cup- (5/7) hours/cup
- 5. Multiple ChoiceThe graph shows a line of best fit for the data collected on the amount of cell phone bills in relation to the number of minutes used. What is the equation of the line of best fit.y = (1/2) x + 3y = (1/2) x + 15y = (1/40) xy = (1/40) x + 15
- 6. Multiple ChoiceLooking at the graph, what is the correlation between the x and y variables?y increases as x increasesy is constanty decreases as x descreasesy decreases as x increases
- 7. Multiple ChoiceA teacher made the following graph showing absences vs. final grades. Predict the grade of a student that has 7 absences.45506070
- 8. Multiple ChoiceWhich scatterplot most likely has a line of best fit represented by y = - 2x + 1WXYZ
- 9. Multiple ChoiceThe graph shows a line of best fit for data collected on the amount of income earned by lawn companies in relation to the number of yards mowed. What is the equation of the line of best fit?y = (3/2) xy = 30xy = 30x + 300y = (3/2)x + 300
- 10. Multiple ChoiceThe graph shows a line of best fit for data collected on the value of used cards in relation to the number of years since they were purchased. What is the equation of the line of best fit?y = 750 x + 9500y = - 750 x +11000y = (3/4) x + 11y = - (3/4) x + 11000
- 11. Multiple ChoiceMrs. Moises, the school counselor, keeps a candy jar in her office for students. During one week, she kept count of how many students came to visit her and the number of candies in the jar, as show in the scatter plot. Based on the trend line, what is the best prediction for the number of candies in the jar when 30 students visit her?90180135150
- 12. Multiple ChoiceLooking at the graph showing a line of best fit, what is the correlation shown?Length of life is constantLength of life increases as amount of sunlight increasesLength of life increases as amount of sunlight decreasesLength of life decreases as amount of sunlight increases
- 13. Multiple ChoiceThe graph shows a line of best fit for data collected on the amount of time teenagers spend on the computer and watching television. Based on the line of best fit, how much time does a teenager spend watching television if they spend 2 hours on the computer?150 minutes135 minutes165 minutes180 minutes
- 14. Multiple ChoiceA teacher made the following graph showing the number of hours that a student studied for an exam versus their exam grade. Predict the grade of a student if they studied for 3.5 hours.801008590
- 15. Multiple ChoiceThe graph shows a line of best fit for data collected on the price of a unit in relation to the number of units sold. What is the equation of the line of best fit?y = - (1/2) x + 10y = - (1/50) x + 40y = - (1/2) x + 40y = - (1/50) x + 10
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