Posted by Shirley on Friday, April 3, 2009 at 7:33pm.
How do you find the distance from the point to the line given the equation and the coordinates?
Pre-Cal - bobpursley, Friday, April 3, 2009 at 9:39pm
put the line in slope intercept form
then,you know the slope of the perpendicular line is the negative reciprocal of m (new slope of perpendicular line=-1/m
So for the perpendicular line...
y=-1/m x + b
put in the point 1,1
1=-/m + b you know m, solve for b.
Pre-Cal - Reiny, Friday, April 3, 2009 at 11:37pm
there is a little formula for this question:
for Ax + By + C = 0
the distance from a point (p,q) to that line is
│Ap + Bq + C│/√(a^2+b^2)
so distance = │4-2-6│/√(16+4)
= 4√20 /20
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