Question 464026: A data set has the following points:
(1,1), (2,5), (3,10)
The slope of the linear regression line is 4.5. Find the y-intercept of the linear regression.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A data set has the following points:
(1,1), (2,5), (3,10)
The slope of the linear regression line is 4.5. Find the y-intercept of the linear regression.
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Note: The three points are not on a single line.
You can see that by calculating the slope between
each pair of points.
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Use the point (1,1) and slope = 9/2 to find "b":
y = mx + b
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1 = (9/2)1 + b
b = (2/2)-(9/2)
b = -7/2
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Cheers,
Stan H.
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