What does the slope of budget line determine?

Consumer's Equilibrium Marginal Rate of substitution Price Ratio Marginal opportunity cost

Price Ratio

The slope of the budget line is indicated by the ratio of the prices of 2 commodities which is being consumed by the consumers. Slope = the ratio of the prices of good x and good y. The slope of the budget line is always negative as it is downward sloping. Slope of budget line = -\(\frac{P_1}{ P_2}\)