MACROECONOMICS HELP NEEDED

QUESTION 9 Which of the following best explains the slope of the AD curve? 0 A change in inflation causes the real interest rate to change, which results in a change in spending. O A change in potential GDP causes the rate of inflation to change, which leads to a change in the real interest rate. Q A change in the real interest rate causes the rate of inflation to change, which results in potential GDP changing. O A change in real GDP causes potential GDP to change, which results in the rate of inflation changing. QUESTION 10 Suppose an economy existed in which investment, net exports, and consumption (and, as usual, government spending) were not sensitive to changes in interest rates. For this economy, the AD curve would 0 have a slope less than 1 but greater than zero. 0 be horizontal. 0 have a negative slope. 0 be vertical