
Lines of Best Fit
Flashcard
•
Mathematics
•
9th Grade - University
•
Practice Problem
•
Hard
+2
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a line of best fit?
Back
A line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data points.
Tags
CCSS.8.EE.B.5
2.
FLASHCARD QUESTION
Front
How do you find the y-intercept in the equation y=mx+b?
Back
The y-intercept is the value of y when x=0, represented by the constant b in the equation.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
3.
FLASHCARD QUESTION
Front
In the equation y=3x-5, what is the value of the y-intercept?
Back
-5
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
4.
FLASHCARD QUESTION
Front
What does the slope of a line represent?
Back
The slope represents the rate of change of y with respect to x, indicating how much y changes for a unit change in x.
Tags
CCSS.8.EE.B.5
5.
FLASHCARD QUESTION
Front
How do you calculate the slope from two points (x1, y1) and (x2, y2)?
Back
Slope (m) = (y2 - y1) / (x2 - x1).
Tags
CCSS.8.EE.B.5
6.
FLASHCARD QUESTION
Front
What is the significance of a negative slope?
Back
A negative slope indicates that as x increases, y decreases, showing an inverse relationship between the two variables.
Tags
CCSS.8.EE.B.5
7.
FLASHCARD QUESTION
Front
What does a positive slope indicate?
Back
A positive slope indicates that as x increases, y also increases, showing a direct relationship between the two variables.
Tags
CCSS.8.EE.B.5
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