1.y=9-c' , y=0, revolved at y aris 2.y=7-c, y=0, 2 =0, revolved at r aris 3. y = x5, y = 256, yaris , revolved at y aris 4. y= va, = =0, y =2, revolved at y aris 5. y = 4x-14, *=0, y =4, revolved at y aris