Equations of the Line of Best Fit
Authored by Anthony Clark
Mathematics
8th Grade
CCSS covered
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20 questions
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1.
MATCH QUESTION
1 min • 3 pts
$25.86
For an increase of one hour time worked, what is the predicted increase in the amount of money spent on entertainment?
$11.38
What is the predicted amount of money spent on entertainment for a student who doesn't work any hours?
$1.81
What is the predicted amount of money spent on entertainment for a student who works 8 hours?
Tags
CCSS.HSF.LE.B.5
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
The scatter plot shows the time spent studying, x, and the quiz score, y, for each of 25 students. Using the points (0, 20) and (80, 90), write the equation of the line o best fit. Your slope should be in decimal form. Then predict the quiz score for a student who spent 50 minutes studying.
Tags
CCSS.HSF.LE.B.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the equation of the line of best fit?
y = -25x + 170
y = -5/8x + 170
y = 25x + 170
y = 5/8x + 170
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the line of best fit?
y = 5/3x + 375
y = 1/3x + 475
y = 5/3x + 3
y = 1/3x + 375
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tags
CCSS.8.EE.B.5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following could be the equation of the LINE OF BEST FIT for the data shown here?
y = 3x – 8
y = -3x – 8
y = -3x + 8
y = 3x + 8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The 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 + 375
y = (1/3) x + 475
y = (5/3) x + 475
y = (1/3) x + 375
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