Under what conditions does the income effect reinforce the substitution effect? Under what conditions does it have

Question:

Under what conditions does the income effect reinforce the substitution effect? Under what conditions does it have an offsetting effect? If the income effect more than offsets the substitution effect for a good, what do we call that good? In a figure, illustrate that the income effect can more than offset the substitution effect (a Giffen good).

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