The wealth effect, interest-rate effect, and exchange-rate effect are all explanations for the slope of short run aggregate supply or the slope of aggregate demand curve.
The AD curve, a graphical representation of the link between price level and spending on real GDP, demonstrates that real GDP rises as price level falls.
The "National Income Determination" phenomenon is described by a three-part model, one of which is the AD curve.
In other words, all of the spending by households (consumption), businesses (investment), governments (government spending), and the rest of the world contributes to the determination of national income (net exports).
AD displays the total amount of that spending at different pricing points.
Therefore, the wealth effect, interest-rate effect, and exchange-rate effect are all explanations for the slope of short run aggregate supply or the slope of aggregate demand curve.
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