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OpenStudy (ibrafacts):
Question
Directrix (directrix):
Find these:
1) the midpoint of segment HK
2) the slope of segment HK
Post what you get.
Then, the equation of the perpendicular-bisector can be written.
OpenStudy (ibrafacts):
okay
OpenStudy (ibrafacts):
midepoint is 4.5,-4
OpenStudy (ibrafacts):
slope is 2/5
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Directrix (directrix):
To get the equation of the perpendicular-bisector, recall that the slopes of perpendicular lines multiply to -1.
If the slope of segment HK is 2/5, then the slope of the line we are finding = -5/2.
Directrix (directrix):
The task comes down to writing an equation of a line with slope -5/2 and passing through the point (4.5,-4).
y - y1 = m*(x - x1) where m is the slope and (x1,y1) is the point (4.5,-4).
OpenStudy (ibrafacts):
oh okay
OpenStudy (ibrafacts):
so i plug in the midpoint and slope into to formula?
Directrix (directrix):
>>slope is 2/5
This is not correct, I think.
Check your slope calculation, okay?
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OpenStudy (ibrafacts):
-2/5
Directrix (directrix):
No.
Look at attachment.
OpenStudy (ibrafacts):
-5/-2
OpenStudy (ibrafacts):
do u want me to solve the problem?
Directrix (directrix):
The slope of the segment HK is still not correct.
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