Is this math problem done right in acheiver

[Chga]

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Find the bisector of a segment that joins (1, 1) and (9, 5).



A. y + 2x = 13
B. 2y – x = 1
C. y – 2x = -2
D. 2y + x = 11
E. 2y – x = 1



It also says correct answer is A

 

[komodo]

yea that looks right.

slope of the line connecting points (1,1) and (9,5) is 1/2.

Bisector, im assuming means perpendicular to the line. So u take the negative reciprocal of the slope, which would be -2.

The only equation with slope of -2 is choice A.

y+2x=13 is the same thing as y=-2x+13

all the other choices give u another slope other than -2.