Find symmetric equations for the line through the points p

Question

1. Find symmetric equations for the line through the points p (1, 1, -3) and Q (2,-1,1).

2. Find an equation for the plane through P (2, 0, 1) and parallel to the line x = 3t, y = 2 - t, z = 3 + 4t.

3. Describe and sketch the surface z = y²+2. Label your axis.