solution:
1)
X = 1+t, y = 2t, z = -3t
2)
X+y-z= 0
(1+t)+(2t) – (-3t) = 0
6t +1=0
6t = -1
T = -1/2
3)
X=1/2,y= -1, z= 3/2
Answer: d) 67
<u>Step-by-step explanation:</u>