\[\text { Total capital income } =r * \bar{K}=M P K \times \bar{K}\]
\[\text { Total labor income } =w * \bar{L}=M P L \times \bar{L}\]
\[\text { National income } \bar{Y} =\text { Total capital income }+\text { Total labour income}\]
\[\bar{Y} =M P K \times \bar{K}+M P L \times \bar{L}\]
\[C=a+b Y^{d}\]
where a is the intercept, b is the marginal propensity to consume (MPC) and Yd is disposable income (Y − T).