Describe the given set of points with a single equation or with a pair of equations. The circle in which the plane through the point (-8, 4, -4) perpendicular to the y- axis meets the sphere of radius 5 centered at the origin. x2+y2+22=9 and y = 4 x2+y2+22=16 and y = 4 x2+y2+z2=7 and y=4 x2+y2+22=25 and y = 4 Find v-u. v=91-3j and u=-87i+8j O-247+72 O (9-87)+5j O-24-727 O-2471-72j