SOLUTION: Find the equation of the line through (2,a) and (4,b).
I have b-a/2 =m but then i'm stuck on finding b as in y=mx+b
thank you
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-> SOLUTION: Find the equation of the line through (2,a) and (4,b).
I have b-a/2 =m but then i'm stuck on finding b as in y=mx+b
thank you
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Question 354308: Find the equation of the line through (2,a) and (4,b).
I have b-a/2 =m but then i'm stuck on finding b as in y=mx+b
thank you Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Find the equation of the line through (2,a) and (4,b).
I have b-a/2 =m but then i'm stuck on finding b as in y=mx+b
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Slope m = diffy/diffx = (b-a)/2
Use y = mx + c and either point to find the y-intercept c
a = ((b-a)/2)*2 + c
a = b-a + c
c = 2a - b
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--> y = (b-a)x/2 + 2a - b
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2y = (b-a)x + 4a - 2b
(a-b)x + 2y = 4a - 2b
