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January 30, 2015

January 30, 2015

Posted by **Bridget** on Monday, November 4, 2013 at 9:32pm.

- math -
**Kuai**, Monday, November 4, 2013 at 9:36pmy2-y1 /x2-x1

-1-4/ 2-3

m = -5/-1

m = 5

parallel = slope 5

perpendicular slope -1/5

- math -
**Reiny**, Monday, November 4, 2013 at 9:37pmslope with the given points

= (-1-4)/2-3) = -5/-1 = 5

so any parallel line has slope 5

any perpendicular line has slope -1/5

- math -
**Jai**, Monday, November 4, 2013 at 9:37pmTo get the slope we use the formula:

m = (y2 - y1) / (x2 - x1)

where (x1,y1) and (x2,y2) are the points.

Substituting,

m = (4 - (-1)) / (3 - 2)

m = (4 + 1) / 1

m = 5

(a) Note that parallel lines have equal slope. Thus slope of the parallel line is also equal to 5.

(b) Note that perpendicular lines have negative reciprocal of slope of each other. Thus, the slope of perpendicular line is equal to -1/5.

Hope this helps :3

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