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OpenStudy (anonymous):
What is the domain of the graph of y = -2x2 - 4x + 7? Is it x ≤ -1?
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OpenStudy (radar):
If x = -2, then y would equal 7 however if x=0 y also = 7, if x=1, y would be y=1/ What is the restriction to make domain x less or equal to -1?
OpenStudy (anonymous):
can you tell me what all real numbers are?
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