Question

Grade 12 Vector's help please!
Find a normal to the plane x+2y+2z-5=0

Answer 1

I know that m = (1,2,2) and that (1,2,2) DOT (x,y,z) should = 0

but then I am stuck.

Answer 2

Thank you for helping me in advanced by the way

Answer 3

what is m?

Answer 4

why do you have to dot with x,y ,z?

Answer 5

the slope? No?

I dot it because if the product is 0 it means i foudn the perpindicular line

Answer 6

to me, the normal vector of the plane is <1,2,2>, done

Answer 7

Oh, you're right! Wow... Is this because when it's written in scalar form it's already using the normals?

Answer 8

@Loser66? Also, thank you :-)

Answer 9

yeap