SOLUTION: What is the equation of the line that contains the points with (x,y) coordinates (–3,7) and (5,–1)

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Question 464961: What is the equation of the line that contains the points with (x,y) coordinates (–3,7) and (5,–1)
Answer by MathLover1(20849) About Me  (Show Source):
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Solved by pluggable solver: FIND EQUATION of straight line given 2 points
hahaWe are trying to find equation of form y=ax+b, where a is slope, and b is intercept, which passes through points (x1, y1) = (-3, 7) and (x2, y2) = (5, -1).
Slope a is a+=+%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+=+%28-1-7%29%2F%285--3%29+=+-1.
Intercept is found from equation a%2Ax%5B1%5D%2Bb+=+y%5B1%5D, or -1%2A-3+%2Bb+=+4. From that,
intercept b is b=y%5B1%5D-a%2Ax%5B1%5D, or b=7--1%2A-3+=+4.

y=(-1)x + (4)

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