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The indifference curve for goods x1x_1 and x2x_2 is sloped downwards when?

Solution

✅ Correct Option: 2

Along an indifference curve utility is constant, so if consumption of one good rises, consumption of the other must fall to keep the consumer equally satisfied. Thus Δx1>0\Delta x_1 > 0 must be accompanied by Δx2<0\Delta x_2 < 0, giving the curve its downward slope.

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