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October 20, 2014

October 20, 2014

Posted by **Shaila** on Saturday, August 28, 2010 at 4:31am.

[x,y] = [-12,-7] + s[8,-5]

[x,y] = [2,-1] + t[3,-2]

- Math - Solving Linear systems -
**Reiny**, Saturday, August 28, 2010 at 8:46amSet the x's equal and the y's equal to each other .....

-12 + 8s = 2 + 3t ---- 8s - 3t = 14 #1

-7 - 5s = -1 - 2t ---> 5s - 2t = -6 #2

#1x2 --> 16s - 6t = 28

#2x3 --> 15s - 6t = -18

subtract:

s = 46

8(46) - 3t = 14

t = 118

check:

for those values first line [356,-237]

and the second line [356,-237]

They intersect at the point (356,-237)

You can use the same method for the other post which I answered as "anonymous"

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