Posted by Lily on Thursday, December 26, 2013 at 4:10pm.
Find the equation of the perpendicular bisector of the line segment joining the points (1, 2) and (2, 1)
Does it mean I have to find the line. Then find a line that cuts that line in to half because perpendicular bisector

Math  Steve, Thursday, December 26, 2013 at 4:26pm
just find the slope of the line: 1/3
the perp has slope 3, so now we have a midpoint (1/2,3/2) and a slope (3), and our line is
y  3/2 = 3(x + 1/2)

Math  Lily, Thursday, December 26, 2013 at 4:44pm
So the equation is 3(x+1/2)?
Like there's no Y= in it?

Math  Steve, Thursday, December 26, 2013 at 7:30pm
I gave you the equation. There's always a y. If you want it it slopeintercept form, which most people find comforting, that would be
y = 3x
Visit
http://rechneronline.de/functiongraphs/
and plot the two functions
(x+5)/3 and 3x
and you will see that the two lines intersect midway between the two given points
Answer This Question
Related Questions
 Math Precal 11  Show that the point P(7,7) is on the perpendicular bisector of...
 Math(word problem)  For the line joining points A(1, 3) and B(5, 7): a.Find ...
 math plz  hi, is there an equation to finding the perpendicular bisector of a ...
 Math  1. Determine the equation of the right bisector of the line segment E(2, ...
 Math  Write a linear equation in slope intercept form for each of the following...
 math2  I was solving a problem. In It r have been given that two lines are ...
 Math (Calculus) (mean value theorem emergency)  Consider the graph of the ...
 Math 9  Find an equation for the perpendicular bisector of the line segment ...
 Math Urgent Please Help  Which construction is illustrated below? a. a ...
 add maths  Find the equation of the perpendicular bisector of the straight line...
More Related Questions