Graph Analysis Worksheet

Based on the line of best fit, how many pizzas were sold if $260.00 was earned in sales?

• 120

• 160

• 80

• 40

A researcher made the following graph showing the number of hours per day that people spend on the computer versus the number of pounds that they are overweight. Predict the number of pounds overweight someone would be if they spent 8 hours per day using a computer.

• 50

• 45

• 60

• 30

A 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 above.

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 + 170

• y = -25x + 170

Based on the line of best fit, what is the mileage of a 9-year-old car?

• 67,500 miles

• 180,000 miles

• 135,000 miles

• 90,000 miles

A 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 90°F?

• 9,900

• 9

• 8,200

• 9,200

The graph below shows a line of best fit for data collected on the number of medium pizzas sold at local pizza shops and the amount of money earned in sales. Based on the line of best fit, how many pizzas were sold if $97.50 was earned in sales?

• 15

• 30

• 45

• 60

Looking at the graph above showing a line of best fit, what is the correlation between the x and y variables?

• y decreases as x decreases

• y is constant

• y decreases as x increases

• y increases as x increases

The graph above shows a line of best fit for data collected on the amount of water bills in relation to the number of gallons of water used. What is the equation of the line of best fit?

What is the equation of the line of best fit?