SOLUTION: if you are given the slope and a point on the line, explain how you would use the point-slope form to find the equation of that line?

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Question 377553: if you are given the slope and a point on the line, explain how you would use the point-slope form to find the equation of that line?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

Using point-slope formula, y+-+y%5B1%5D+=+m%28x+-+x%5B1%5D%29, equation of the line

to find the equation of a line with slope m and P%28x%5B1%5D%2Cy%5B1%5D%29 on the line. 

for ex if the slope m = -3 and point is Pt(1,1)

y+-+y%5B1%5D+=+m%28x+-+x%5B1%5D%29

y+=+m%28x+-+x%5B1%5D%29%2B+y%5B1%5D

y = -3(x-1) + 1

y = -3x + 3 + 1

y = -3x + 4