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July 24, 2014

Homework Help: precalc

Posted by Anonymous on Monday, September 10, 2012 at 2:11pm.

I;m not sure if i am doing this right...I keep getting a negative intersection point, which doesn't seem possible.

Please help!

a) find the equatoin of line 1 which passes through (1,3) and (9,7)
I get y=3+1/2(x+1)or y=1/2x+2.5

b) the line 2 is perpedicular to line 1 and passes through 5,0. find the equation

for this one i get y=-2x+10

c) find where line 1 and line 2 intersect each other. use this to compute the distance between the point (5,0) and line 1

I get (-5,0) for the intersection, which doesnt make sense to me?

Thanks

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