Is the function y = x^3 one-to-one? If not, why?

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Is the function y = x^3 one-to-one? If not, why?
 

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RTCNTC said:
Is the function y = x^3 one-to-one? If not, why?

sketch the graph ... if it passes the horizontal line test, it is 1-1.
 
Yes, it passes the horizontal line test and thus 1-1.
 

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