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Question 591637: Find the equation of the line that passes throught the points(-2,1)&(4,-8) Please I need help with these. Thank you
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Find the equation of the line that passes throught the points(-2,1)&(4,-8)
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Find the slope, m
m = diffy/diffx = (1 - (-8))/(-2 - 4) = 9/-6
m = -3/2
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Use y = mx + b and either point to find b, the y-intercept
-8 = (-3/2)*4 + b
b = -8 + 6
b = -2
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The eqn is y = mx + b
y = (-3/2)x - 2
or, 3x + 2y = -4
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not that bad?
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