The following shows a Keynesian 45° line diagram, where GDP (
Y) is measured on the horizontal axis and consumption of domestically produced goods (
Cd), injections (
J), withdrawals (
W) and aggregate expenditure (
E) are measured on the vertical axis.

Equilibrium GDP is given by
◦
ad.◦ 0
d.◦ 0
l.◦
0a.