Find the octant in which the poits (-3,1,2) and (-3,1,-2) lie

Find the set of values of a if the points (1,2) and (3,4) lie to the same side of the straight line 3x-5y+a=0

Name the octants in which the following points lie (1,2,3),(4,-2,3),(4,-2,-5),(4,2,-5),(-4,2,-5),(-4,2,5),(-3,-1,6) (-2,-4,-7)

Find the ratio in which the plane 2x-3y+6z=5 divides the line joining (2, 3, -1), (-1, 4,1) .

Find the ratio in which the plane 2x-3y+6z=5 divides the lines joining (2,3,-1),(-1,4,2) .

The point (-1,4,-2) lie in the octant