- #1
cleopatra
- 45
- 0
Homework Statement
1) x=3+t
y=2-4t
z=-5+11t
2)12x+10y-4z=46
Find the point where these two lines intersect.
12x+10*0-4*0=46
x=3,8...
doesn´t make any sense
cleopatra said:Homework Statement
1) x=3+t
y=2-4t
z=-5+11t
2)12x+10y-4z=46
Find the point where these two lines intersect.
12x+10*0-4*0=46
x=3,8...
doesn´t make any sense
gabbagabbahey said:For starters, you don't have two intersecting lines...2) is the equation of a plane, not a line.
Secondly, you are right: what you did doesn't make any sense...why have you assumed that y=z=0 at the point of intersection?
Just plug your parametric equations for x,y, and z into the equation of the plane and solve for t...what does that value of t make x,y and z?
Dick said:cleopatra has already been told to do this twice on the other thread dedicated to this problem.
cleopatra said:36+12t+20-40t+20-44t=46
t=30/76?
cleopatra said:36+12t+20-40t+20-44t=46
t=30/76
?
CompuChip said:First of all let's be clear on the question.
Does it really say "find the point where these two lines intersect"?
Because I definitely get a line of intersection.
CompuChip said:First of all let's be clear on the question.
Does it really say "find the point where these two lines intersect"?
Because I definitely get a line of intersection.
cleopatra said:yes it says "point". That´s why it confuses me as well.
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