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2014-11-20T21:37:18+08:00

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Parallel means have the same slope
(y2-y1)/(x2-x1)=m
(4-x)[(3-5)/(4-x)=3]
3-5=3(4-x)
-2=12-3x
-14=-3x
x=14/3

Hope this helps

1 5 1
wow! thanks how about if its perpendicular?... :)
perpendicular is negative reciprocal, for example if its 2, then it is perpendicular, the perpendicular slope is -1/2
ok got it.. Thanks!.. big help!
np =)
2014-11-21T00:50:39+08:00
Sol'n:
Two points intercept form:
(y2-y1)=m(x2-x1)
at point (x,5) & (4,3)
where 'm' is the slope and it is equal to 3 because it is parallel.
Therefore;
(3-5)=3(4-x)  
X=4.67

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