Answer:
budget line
Explanation:
A budget line is a graphical representation that shows all the possible combination of how two products that can be consumed at different prices with a given income. The budget line is downward sloping with the gradient of the slope reflecting the two prices.
A budget line assists in understanding consumer choices and behavior. A budget line may shift due to changes in the consumer's income. It shifts to the left when income decreases and shifts to the right when income increase.