Output in a Private-Closed Economy Consumption Determination: Consumption y 202 can be divided into two parts. One is income-related consumption and the other is non-income related consumption(often called autonomous consumption). Therefore the consumption function can be written as C=A+CYOutput in a Private-Closed Economy • Consumption Determination: Consumption can be divided into two parts. One is income-related consumption and the other is non-income related consumption (often called autonomous consumption). Therefore the consumption function can be written as C = A + c·Y