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Mathematics 6 Online
OpenStudy (ibrafacts):

Please please help how do u this?

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

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?

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.

OpenStudy (ibrafacts):

i really don't know how to get the slope

Directrix (directrix):

|dw:1456100420932:dw|

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