SOLUTION: Hi guys, it's me again. I need your help on this one. Find an equation of the line passing through the pair of points. Write the equation in slope-intercept form. (5, -3) and

Question 369879: Hi guys, it's me again. I need your help on this one.
Find an equation of the line passing through the pair of points. Write the equation in slope-intercept form.
(5, -3) and (1, -4)
Found 2 solutions by Alan3354, rfer:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Given 2 points example.
Find the equation of the line thru the points (2,1) and (3,5)
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This is a 2 step process. First find the slope of the line thru the points.
slope, m = diffy/diffx
m = (5-1)/(3-2)
m = 4
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Now use y = mx + b with either point to find b, the y-intercept.
y = mx + b
5 = 4*3 + b
b = -7
-------
y = mx + b
y = 4x - 7 is the answer.
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Another approach using determinants:
|x y 1|
|2 1 1| = 0
|3 5 1|
--------
x(1-5) - y(2-3) + 1(10-3) = 0
-4x + y + 7 = 0
y = 4x - 7
---------
For further assistance, or to check your work, email me via the thank you note
or at Moral Loophole@aol.com

Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
y=1/4x-4 1/4
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