If the economy is weak, then prices remain constant although unemployment rises. But unemployment rises only if inve...

mikejl December 8, 2022

Sufficient and Necessary

The question said if investment decreases, so I made the investment decrease my sufficient due to the rules we learned, but you guys made it necessary.

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Emil-Kunkin December 8, 2022

Hi, "only if" introduces a necessary condition, while if introduces a sufficient condition.