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#1 2014-08-25 16:21:03
- math4matthew
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- Registered: 2014-08-25
- Posts: 3
intersecting lines...
In the xy plane, line l passes through the origin and is perpendicular to the line 4x+y = k, where k is constant.
If the two lines intersect at the point (t,t+1), what is the value of t?
a) -4/3
b) -5/4
c) 3/4
d) 5/4
e) 4/3
How do you figure this out?
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#2 2014-08-25 18:25:10
- Olinguito
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- Registered: 2014-08-12
- Posts: 649
Re: intersecting lines...
The line is perpendicular to and so has gradient ; since it passes through the origin, its equation is
[/list]The point lies on it. Substitute in these co-ordinates and find the value of .
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[/list]The point lies on it. Substitute in these co-ordinates and find the value of .
Bassaricyon neblina
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