Chad created a table that shows the ratio of his role playing game cards.

Chad’s Cards
Card Type
Attack
Defense
Healing
Damage
Quantity
3
4
1
2

Next, Chad created this graph with ordered pairs that show the possible ratios of the number of damage to defense cards in his deck. What error did Chad make?

On a coordinate plane, a graph titled Chad's Cards has Damage on the x-axis and Defense on the y-axis. Points (1, 2), (2, 4), (3, 6), and (4, 8) are plotted.