A line segment, ST, has endpoints S(19,-1) and T(-1,3). Which of the following equations represents the perpendicular bisector of the line segment?

-A- y = -20x - 44
B- y = 4x - 45
C- y = 5x - 24
D- y = 5x - 44

Question

A line segment, ST, has endpoints S(19,-1) and T(-1,3). Which of the following equations represents the perpendicular bisector of the line segment?

 -A-   y = -20x - 44
  B-  y = 4x - 45
  C-  y = 5x - 24
   D-  y = 5x - 44

amistre64 · Answer

you will need to determine slope and midpoint

anonymous · Answer

Im so lost with these questions. D": Im gonna fail.

anonymous · Answer

How do I do that?

anonymous · Answer

graph it out, and that might help find the midpoint

amistre64 · Answer

you are taking a classs that has gone over the material that you need.  what have you been doing to find a slope and a midpoint?

anonymous · Answer

Im in k12 a online school. I dont have a book just a lesson. She gives us a online calculator through our live classes an when we get out we do not have that calculator. Its not like im not paying attention because im trying so hard to understand this concept.

anonymous · Answer

She hasnt really focused on the mathmatical way to figure this out.

amistre64 · Answer

a calculator is immaterial at the moment, you have something called a slope formula, to your best recollection, what is that formula?

amistre64 · Answer

lets define slope as:

the change in y
-------------
the change in x

or simply


y1 - y2
------
x1-x2

anonymous · Answer

i do the same program :)

anonymous · Answer

wait isnt it y2 - y1 ?

amistre64 · Answer

it doesnt matter.  if you like y2-y1 / x2-x1 better than its works the same thing

anonymous · Answer

okay now how do i figure out which is y and x ?

amistre64 · Answer

um, a point itself is defined as (x,y)

anonymous · Answer

Okay that makes sense. so i just do the slope formula right?

amistre64 · Answer

well, the slope formula gives us pertinent information, and so dies the middle point between the stated points

anonymous · Answer

what do I do then?

amistre64 · Answer

the perp line to this line has a useful property:  if we know the slope is m,  then the perp slope is -1/m

and we have different line equation formats, one of which uses a point and a slope in its construction

amistre64 · Answer

what is our slope between the stated points?

anonymous · Answer

Okay you lost me there. Im just gonna try an go over the lesson or somethin cause im down right confused. thank you though.

amistre64 · Answer

i agree there is a lot of information that you need to be cognizant of.   good luck with it