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September 1, 2015

Homework Help: Math

Posted by Crissy on Saturday, September 17, 2011 at 2:46am.

I have math HW and these are the questions i wasn't aware of how to answer... please help.

a)Prove that 4x-y-1=0 is parallel to y=4x-5

b)Show that the points A(3,1), B(5,2) and C(11,5) are collinear

c)Show that the lines y=2x-4 and x+2y-10=0 are perpendicular to one other.

d) Prove that triangle ABC is isoscles given A(3,1), B(-3,7) and C(-1,3)

Thank you!

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