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9-74.

Thui made the following hypotheses: and . Which of the following conclusions can she make? Homework Help ✎

Find the boundary points of the two equations.



Boundary points and

Test numbers on all sides of the boundary points.

Test


True                           False

Test


True                             True

Test


False                           True

Because is the only test that makes both equations true, (b), or  is the correct answer.