Question 470947: Write the equation of the line passing through (-4, 4) and (8, 7)
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Write the equation of the line passing through (-4, 4) and (8, 7)
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Determinants is the best method, if you understand them:
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|+x +y +1|
|-4 +4 +1| = 0
|+8 +7 +1|
The plus signs are for alignment.
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x*(4-7) - y*(-4-8) + (-28-32) = 0
-3x + 12y = 60
x - 4y = -20
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