Answer:
BUDGET LINE
Explanation:
Budget Line is graphical representation of product combinations that a consumer can buy, given product prices & income (all spent)
It is downward sloping because of inverse relationship between goods - one good's consumption has to be decreased to increase other good's consumption, given same prices & income.
Budget Line Equation : x.px + y.py = m
[x = quantity of good x, px = price of good x, y = y good quantity, py = good y price, m = money income].
Slope of Budget line is : Amount of a good sacrifised to attain the other good, given same prices & income. The sacrifise ratio gets derived from the price ratios of the two goods.
Budget Line Slope = ΔY / ΔX = PX / PY
