Question

grade 12 vectors.
How do I get this vector form of a line r=(2, -2, 1) + t(1, 2, -1) into scalar form?

Answer 1

I am not sure i understand, the question

Answer 2

do you have an example of scalar form?

Answer 3

Scalar is Ax + By + Cz + D = 0

Answer 4

oh i see, okay, i'm guessing your were given some vectors to begin with right

Answer 5

The questions is "Find the shortest distance between the point (4, 0, 1) and the line r=(2, -2, 1) + t(1, 2, -1)"

Answer 6

oooh, i think i got it! I have to find the direction vector from the point in the line and the point given and find the normal by doing the cross product!

Answer 7

yup, sounds like you got it

Answer 8

Okay! thank you