165k views
1 vote
A line segment has endpoints at (8, 3) and (2,5). What would be the equation of this line's perpendicular bisector?

User ANisus
by
4.7k points

1 Answer

5 votes

Answer:

y = −1/3x+17/3

Explanation:

The line segment has slope -1/3. This means that any line perpendicular to it will have a slope of 3 (negative reciprocal)

Any line that bisects the line segment will pass through its midpoint. The midpoint is (5,4)

Midpoint formula:
( (x_1+x_2)/(2), (y_1+y_2)/(2) )

So perpendicular bisector of this line is simply a line with slope −1/3 that passes through point (5, 4)

y - 4 = -1/3 (x-5)=

y = −1/3x+17/3

User Igor Popov
by
5.3k points