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Home Q & A Board Science-Related Homework Help Mathematics
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Stevbo Stevbo
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Posts: 100
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8 years ago
If an estimated regression line has a Y-intercept of –7.5 and a slope of 2.5, then when X = 3, the actual value of Y is:

  A.0

  B.10

  C.unknown   
  D.5
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wrote...
#1
Staff Member
Educator
8 years ago
y = mx + b
y = (2.5)x + (-7.5)
y = (2.5)*3 -7.5
y = 7.5 -7.5
y = 0
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