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Sun 9 Apr, 2006 08:28 pm
Hey all,
I noticed another guy had posted a question from the very same PAGE as the ones I'm having trouble with on here today, so I thought maybe you guys could help me. I have to solve the following:
Challenge 1:
An line in 3-space has parametric equations:
x = -2 + 2t
y = 5 + 4t
z = 3 + t
Then it refers to a diagram of this and says its a 2D diagram of the line in 3D.
Determine the slope of the line and the z-intercept.
Nevermind.. think I got it.
Plus, I forgot the pic.
A line in 3 space is normally given as
(x+a)/b=(y+c)/d=(z+e)/f where a,b,c,d,e&f are all constants. To put this line in that form solve each parametric expression in terms of t and equate.
Similarly solving for the z intercept is to set it equal to zero, solve its parametric eqn for t and use that t to determine the z intercept values of x & y.
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