Question

if two vectors 2î+3j-k and -4î+-6j-xk are parallel to each other then find the value of x
a. 0
b.-2
c.3
d.4​

Answer 1

Answer:

The answer is b.-2

Explanation:

Suppose the first vector is a=2i+3j-k and the second one is b=-4i+-6j-xk.

Now divide both of them

2i/-4i = 3j/-6j = -k/-xk

1/-2=1/-2=1/x

x=-2