An example D(p=a-bp S(p)=C+dp At the equilibrium price p*, D(p*)=s(p*). That is, a-bp =c+dp which gives p b+d *a-c ad+ bc and q =D(p)=S(p)= b+dAn Example D(p) = a − bp S(p) = c + dp At the equilibrium price p*, D(p*) = S(p*). That is, a − bp = c + dp * * which gives p a c b d * = − + and q D p S p ad bc b d * * * = ( ) = ( ) = . + +