Calculating Line of Best Fit

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Mathematics
•
9th Grade
•
Medium
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the line of best fit?
Back
The line of best fit is a straight line that best represents the data on a scatter plot. It shows the trend of the data points and is used to make predictions.
2.
FLASHCARD QUESTION
Front
How do you calculate the slope of a line?
Back
The slope (m) of a line is calculated using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.
3.
FLASHCARD QUESTION
Front
What does a positive slope indicate?
Back
A positive slope indicates that as the x-value increases, the y-value also increases, showing a direct relationship between the two variables.
4.
FLASHCARD QUESTION
Front
What does a negative slope indicate?
Back
A negative slope indicates that as the x-value increases, the y-value decreases, showing an inverse relationship between the two variables.
5.
FLASHCARD QUESTION
Front
What is the y-intercept of a line?
Back
The y-intercept is the point where the line crosses the y-axis, represented as (0, b) in the equation y = mx + b.
6.
FLASHCARD QUESTION
Front
What is the equation of a line in slope-intercept form?
Back
The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.
7.
FLASHCARD QUESTION
Front
How can you determine the line of best fit using a graph?
Back
To determine the line of best fit, plot the data points on a graph and draw a straight line that best represents the trend of the points.
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