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Question 377873: Hello! You are all wonderful and have been such a big help to me! Thank you so much for the work you do on this website!
I am trying to find out the slope intercept form of the equation of the line passing through these points (8,-6), (4,-2). I am using the formula y=mx+b. Thanks so much!!
Denise Bissell
Found 2 solutions by sophxmai, Alan3354:
Answer by sophxmai(62)   (Show Source):
You can put this solution on YOUR website! The points that are given to you are (8,-6) and (4,-2).
The equation is y=mx+b.
What you need to find is the slope, m and the y-intercept, b.
To find the slope, m, you use the formula:
So,
m=-1
Now from y=mx+b, we have y=-x+b.
To find the y-intercept, we can substitute one of the points in for x and y, and solve for b.
(4,-2)
y=-x+b
(-2)=-(4)+b
-2=-4+b
2=b
Now from y=-x+b, we have y=-x+2
Answer by Alan3354(69443)  (Show Source):
You can put this solution on YOUR website! I am trying to find out the slope intercept form of the equation of the line passing through these points (8,-6), (4,-2). I am using the formula y=mx+b.
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Slope m = diffy/diffx = (4/-4) = -1
Use y = mx + b and either point to find b
-6 = -1*8 + b
b = 2
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y = -x + 2
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The other tutor used diffx/diffy. That might give the correct answer for this one, but it's not correct in general.
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