Ms. Garza bought boxes of markers for her classroom and each box has 8 markers. The graph below represents the relationship between the number of boxes, x, and the number of markers, y. Ms. Garza's Markers у 40] 36 32 28 24 Number of Markers 20 16 12 8 1 2 3 4 Number of Boxes Which equation best represents the relationship between x and y? O A. y = 8x O B. y = 8 + x OC. X = 8y O D. X = 8 + y