A triangle has vertices at a(0,6), b(4,6), c(5,4) and d(3,3). What is the coordinates of each vertex if the triangle is reflected over the y axis

The base of pyramid a is a rectangle with a length of 10 meters and a width of 20 meters. the base of pyramid b is a square with 10-meter sides. the heights of the pyramids are the same. the volume of pyramid a is the volume of pyramid b. if the height of pyramid b increases to twice that of pyramid a, the new volume of pyramid b is the volume of pyramid a.