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A large decrease in real estate values will decrease gross private investment. Income is private consumption, government purchases, gross investment, and net exports.

The declining investments will decrease the national income. Thus, the consumption and saving will decline, shifting the curves towards the left provided the MPC and MPS are constant.

Stock prices affect the financial market. A sustained, sharp increase in stock prices will increase stock demand. Therefore, the money demand for speculative purposes will increase. It will not affect the economy’s national income. Hence, the consumption and saving schedules will remain unchanged.

An extension of 5 years to the minimum age for social security benefits will include a larger population among the beneficiaries. It will add significantly to the national income.

Therefore, the economy’s consumption and saving will increase due to an increase in income, provided the MPC and MPS remain the same., and the consumption and saving schedule will shift right,

The expectation of expansion will stimulate investments in the economy, which will further accelerate the income generation in the economy. Thus, the national income will increase rapidly. Also, the future expectation for increasing the price level will force people to consume more. Hence, MPC will increase, and MPS will decrease.

Therefore, consumption will increase along with the declining saving. It will push the consumption schedule to the right (increase), while the saving schedule will shift to the left (decrease).

As the households finance the auto purchase, the auto sales will increase. Thus, private consumption will increase. On the other hand, the economy’s savings will decline as households consume more than their income. Therefore, the consumption schedule will shift to the right (increase), and the saving schedule to the left (decrease).