Equation for Best Fit
Authored by Anthony Clark
Mathematics
8th Grade
CCSS covered
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16 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the equation for the line of best fit?
y = ax + b
y = mx + a
y = mx + b
y = mx + c
Answer explanation
The correct equation for the line of best fit is y = mx + b, where m represents the slope and b represents the y-intercept.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
2.
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
Answer explanation
The correct equation of the line of best fit is y = -25x + 170, which matches the first answer choice.
Tags
CCSS.HSF.LE.B.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following lines represents the line of best fit for the scatter plot?
A
B
C
D
Tags
CCSS.8.EE.B.5
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
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
Tags
CCSS.8.EE.B.5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tags
CCSS.8.EE.B.5
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
Tags
CCSS.8.EE.B.5
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