Line of Best Fit Finding Slope

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Create a scatter plot of the data set. Then find the equation of the Line of Best Fit.

• y = 0.892x - 1.82

• y = 1.82x - 5.02

• y = 0.796x + 5.02

• y = 1.82x + 5.02

Determine the slope and y-intercept from the following equation:   y = 3/2x + 3

• slope: 5   y-intercept:  (0,3) 

• slope: 3/2   y-intercept:  (0,3) 

• slope:  4  y-intercept:  (0,3/2)

• slope: 1/5   y-intercept:  (0,5) 

Find the slope from the table:

• -2/5

• 5/-2

• 5/2

• 2/5

The scatterplot shows data collected from 9 people about how much money they earned based on the hours they worked. Use 2 points on the line of best fit and find the slope.

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Find the slope for the trend line using points (2,2) and (4,3)

• 2

• 1/2

• -2

• -1/2

• gain 5 hours of sleep for every 7 cups of coffee

• lose 5 hours of sleep for every 7 cups of coffee

• gain 5 cups of coffee for every 7 hours of sleep

• lose 5 cups of coffee for every 7 hours of sleep

What is the line of best fit for the given table? Round to the nearest hundredth.

• y=5.52x+22.94

• y=6.07x+14.76

• y=2.72x+12.09

• y=1.23x+5.38

What is the line of best fit?

• f(x)= 5x+1.82

• cannot be determined

• f(x)= 1.82x + 5.02

• f(x)= 1.1x + 4.2

Is this line an accurate line estimate of best fit for the data?

• Yes

• No