Question

What is the significance of the constant in a plane equation?

Answer 1

I read somewhere that it is the distance to the origin. Is this correct? Also distance to what? The center of the plane?

Answer 2

Do you know about vectors and the dot product between 2 vectors ?

Answer 3

yes this is what I am learning. not quite sure I have a full grasp on it just yet

Answer 4

Let me try again. let u be a vector with length 1, |u|= 1

\[ v \cdot u = |v| |u| \cos \theta = |v| \cos \theta \]
at θ = 0 you get |v| cos 0 = |v|