the increased use of credit cards reduces the public's desire to hold onto money. illustrate the effect of the change above on a fully labeled money market graph. based on the change in the interest rate from part (a), what will happen to the prices of previously issued bonds? what will happen to the price level and real income? explain. will the velocity of money in this scenario increase, decrease, remain the same, or is the change indeterminate? what open market operation would the central bank need to take to offset the change in the interest rate from part (a)?