16.) The Perpendicular bisector of the segment whose endpoints are (-1,-1) & (5,7) 17.)The coordinates of the vertices of triangle ABC are A(-6,-8), B(6,4), & C(-6,10) A)Write an equation of the altitude from C to AB. B)Write an equation of the altitude from B to AC. C)Find the x-coordinate of the point of intersection of the two altitudes in parts A & B. 18.)Given Triangle MAT with vertices M(2,-1), A(4,7) & T(7,2), show tht triangle MAT is an isosceles right triangle.

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anonymous · Answer

please help me.

phi · Answer

For 16.) you need to do a couple of things.  First, can you find the mid-point? that is where the bisector crosses the segment.

can you find the slope of the segment between points (-1,-1) and (5,7)? use change in y over change in x.

The slope perpendicular to the segment is -1/m  where m is the slope of the segment.

Now use the point slope formula to find the equation of the line that is the perpendicular bisector.

phi · Answer

And you should not delete your questions.  That is very rude.

anonymous · Answer

please help me.

anonymous · Answer

sorry I thought thta was what you were supposed to do when your questions were answered so other people don't try to answer them