Scatter Plots Line of Best Fit Equations
Authored by Anthony Clark
Mathematics
8th Grade
CCSS covered
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following would be the most accurate equation for the scatter plot?
y = -2x - 7
y = -x + 7
y = 4x + 7
y = 25x + 7
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following could be a possible line of best fit for the data?
y = -1.5x + 20
y = -0.5x + 19
y = x + 20
y = .7x + 15
Tags
CCSS.8.EE.B.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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
y = -(5/8) x + 170
y = (5/8) x + 170
Tags
CCSS.8.EE.B.5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The 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) x
y = 30x
y = 30x + 300
y = (3/2)x + 300
Tags
CCSS.HSF.LE.B.5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Take a look at the scatter plot and line of best fit at right. Is the line of best fit correct? Why or why not?
Yes, it falls well within most of the data observed.
No, most of the data points fall below the line.
Yes, there are points above and below the line.
No, the line’s slope does not match the trend of the data.
Tags
CCSS.8.EE.B.5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Take a look at the scatter plot and line of best fit. Is the line of best fit correct? Why or why not?
No, while the line does cross through some points, it does not follow the slope of the data.
Yes, there are approximately the same points above and below the line.
No, not enough points are plotted to determine if this is an accurate line.
Yes, the line trends closely with the observed data.
Tags
CCSS.8.EE.B.5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the equation of the line of best fit? Read the units carefully on this one!
y = 750 x + 9500
y = - 750 x +11000
y = (3/4) x + 11
y = - (3/4) x + 11000
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