n1. i'l. consumer receives income y in the current period~ income y' in the future period, and pays tastes of t and t' in the current and future periods~ respectively. The consumer can borrow and lend at the real interest rate r. This consumer faces a constraint on ho'vzl.r much he or she can borrow, much like the credit limit typically placed on a credit card aocount. That is, the consumer cannot borrow more than I, i.e.._ c E .3! - t + :r:._ where a: c: we - y + t, with we denoting lifetime wealth. Use diagrams to determine the effects on the consumer's current co11s11mption._ future consumption._ and savings of an increase in J:._ and explain your results