Thursday

December 25, 2014

December 25, 2014

Posted by **Lily** on Thursday, December 26, 2013 at 4:10pm.

Does it mean I have to find the line. Then find a line that cuts that line in to half because perpendicular bisector

- Math -
**Steve**, Thursday, December 26, 2013 at 4:26pmjust find the slope of the line: 1/3

the perp has slope -3, so now we have a midpoint (-1/2,3/2) and a slope (-3), and our line is

y - 3/2 = -3(x + 1/2)

- Math -
**Lily**, Thursday, December 26, 2013 at 4:44pmSo the equation is -3(x+1/2)?

Like there's no Y= in it?

- Math -
**Steve**, Thursday, December 26, 2013 at 7:30pmI gave you the equation. There's always a y. If you want it it slope-intercept form, which most people find comforting, that would be

y = -3x

Visit

http://rechneronline.de/function-graphs/

and plot the two functions

(x+5)/3 and -3x

and you will see that the two lines intersect midway between the two given points

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