KR - 37.Line of Best Fit (Predictions & Practical Problems)

Given the line of fit is y=-1.07x + 92.87,

what would be the estimate of the average temperature for a city with a latitude of 48 degrees?

• 20 degrees

• 42 degrees

• 50 degrees

• 60 degrees

Given the line of best fit is y=9.17x + 338.24, what would be the estimate of the number of graduating seniors in 2025?

• 350 seniors

• 423 seniors

• 457 seniors

• 500 seniors

The data in the table shows the Olympic 500-meter Gold Medal Speed Skating times. If the line of best fit is y=-2.29x + 430.56, what is the estimated time for the 2020 Olympics?

• 339 seconds

• 350 seconds

• 380 seconds

• 400 seconds

Find the line of best fit and use it to estimate the number of suitcases on a flight carrying 250 people.

• 250 suitcases

• 300 suitcases

• 400 suitcases

• 500 suitcases

Given the sales for Walmart for each year and the line of best fit y=16.46x + 217.52, what year were the sales be about $613 (billion)?

• 2000

• 2012

• 2018

• 2025

Given the table of weight in pounds and body mass index (BMI), determine the line of best fit and use it to estimate the BMI of a 180 pound person.

• 20

• 25

• 30

• 35

If the line of best fit is given by y=-0.1x + 26000, estimate the value of the car if the odometer reads 95,000 miiles.

• $16,500

• $18,500

• $20,500

• $0

Determine the equation for the line of best fit and use it to estimate the number of rabbits at the farm in 2016 (x = 8).

• 50 rabbits

• 60 rabbits

• 70 rabbits

• 80 rabbits

Given the equation for the line of best fit

y = -0.02x + 1.79, estimate the population of the city in 2020.

• 0.75 million

• 0.50 million

• 0.39 million

• 0.27 million

Given the line of best fit

y=-1.62x + 215.64,

estimate Carter's weight 15 weeks into his diet.

• 213 pounds

• 202 pounds

• 191 pounds

• 180 pounds