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January 26, 2015

January 26, 2015

Posted by **Louise** on Thursday, October 21, 2010 at 9:57pm.

- math -
**Reiny**, Thursday, October 21, 2010 at 10:08pmyou should have come across the property that the slopes of perpendicular lines are "negative reciprocals" of each other.

slope of y = 3x+ 5 is 3

so the slope of new line is -1/3

new equation: y = (-1/3)x + b

sub in the point(4,-3) to find b

replace b in the new equation and you are done.

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