- #1
Styx
- 27
- 0
Determine the value of k such that the line x+2/-1 = y-3/2 = z-1/k and the plane 2x - 4y + z +11 = 0 intersect at
a) a single point
b) an infinite number of points
no point
x = -2 - t
y = 3 + 2t
z = 1 + k
2(-2-t) -4(3+2t) + (1+k) +11 = 0
-4 - 2t - 12 -8t + 1 +k +11 = 0
10t - k = -4
For part a) I have concluded that k = and real number, k can not equal -10 or ...
For part c) I have concluded 10t - 10t = -4, 0t = -4
The planes do not intersect if k = -10
What I am having trouble with is part b). I have not sure how I would reach 0t = 0 which would put the line on the plane and therefore create infinite points of intersection
a) a single point
b) an infinite number of points
no point
x = -2 - t
y = 3 + 2t
z = 1 + k
2(-2-t) -4(3+2t) + (1+k) +11 = 0
-4 - 2t - 12 -8t + 1 +k +11 = 0
10t - k = -4
For part a) I have concluded that k = and real number, k can not equal -10 or ...
For part c) I have concluded 10t - 10t = -4, 0t = -4
The planes do not intersect if k = -10
What I am having trouble with is part b). I have not sure how I would reach 0t = 0 which would put the line on the plane and therefore create infinite points of intersection