Exercise 22 Page 8

For plane $M$ and $\overrightarrow{NB}$ to intersect at point $A,$ $A$ has to lie in plane $M.$ We will, therefore, start by sketching a plane $M$ and point $A$ in the plane.

We can now place points $N$ and $B$ somewhere on opposite sides of plane $M$ and draw the ray $\overrightarrow{NB}$ passing through $A,$ to get the desired sketch.

Note that there are infinitely many ways to sketch the figure. All of them are correct, as long as the ray starts at $N,$ intersects the plane at $A,$ and passes through $B.$