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Math Help? Algebra :)

[From: ] [author: ] [Date: 12-10-02] [Hit: ]
1) and (-11,2. Give the equation X/Y= -1/2 the constant of the variation is:-1.2- I dont undertand what you are asking sorry-1. Slope is the ratio of rise over run. Rise is the change in y between the points,......
Can someone help me understand this a little better?

Thanks!

1. Find the slope of the line that passes through the points (-3,1) and (-11,8) using the slope formula:

2. Give the equation X/Y= -1/2 the constant of the variation is:

-
1.- slope is y2-y1/x2-x1 so: 8-1 over -11-(-3)=
7/-8 (fraction)

2- I don't undertand what you are asking sorry

-
1. Slope is the ratio of rise over run. Rise is the change in y between the points, and run is the change in x between the points.

For the points (-3,1) and (-11,8)
rise = 8 - 1 = 7
run = -11 - (-3) = -8
so
slope = 7/(-8) = -7/8

2.
x/y = -1/2
x = -y/2
-x = y/2
y = -2x

the constant of variation is -2
1
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