SOLUTION: hello I am having a difficulty with the following equation: Write an equation of the line through (1,-3) and (-2,6).

Question 93599: hello I am having a difficulty with the following equation: Write an equation of the line through (1,-3) and (-2,6).
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Write an equation of the line through (1,-3) and (-2,6).
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slope = [6--3] / [-2-1] = 9/-3 = -3
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Form of the line is y = mx+b
You have m= -3 and y=6 when x=-2 so you can solve for "b":
6 = -3*-2+b
b = 0
EQUATION:
y = -3x
==============
Cheers,
Stan H.
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