How to plot graphically the savings function derived algebraically, indicating the positions Y>C, Y<C, Y=C
From the keynes consumption and income function it is known that ,
"Y=C+S \\\\\n\nC=a+MPC(Y)\\\\\n\nS=Y-C\\\\\n\nS=-a+Y(1-MPC)"
Where a is the a= autonomous consumption function.
And savings is a positive function of Income therefore positive and upward sloping.
Now, considering three situations, when Y=C, there will be no savings as at point Y0, when Y>C at Y2 it means that there is some savings which is denoted by a. When Y<C at point Y1 then it means the consumer borrows and the exogenous consumption becomes -a.
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