In which of the following x and y vary directly with each other. For each direct variation, state constant of variation. 1. y = -8x 2. y = 3/4x 3. xy=5 4. y=3/x 5.y+4x=0 6. y-3x=1 7. x 1 2 3 4 y - 5 - 10 - 15 - 20 Share with your friends Share 9 Pradeep answered this -4 View Full Answer