Hello, Faz!

These are very basic questions.

. . Exactlywhereis your difficulty?

The direction vectors of the lines are: .a) Determine whether the lines: .

are orthogonal, parallel or neither.

Since is not a scalar multiple of , they arenotparallel.

We find that: .

Therefore: .

Do the coordinates satisfy the equation? . . . Plug them in!b) Determine whether the line . .contains the point (6,-3,8)

We have a point and the direction vectorc) Find an equation of the line containing the given point (5,3,4)

and parallel to the vector: .

. . . Well?