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Does this table represent an exponential function x 1 2 3 4 y -1 -8 -27 -64

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\bf \begin{array}{ccll} x&y\\ \cline{1-2} 1&\stackrel{-1^3}{-1}\\\\ 2&\stackrel{-2^3}{-8}\\\\ 3&\stackrel{-3^3}{-27}\\\\ 4&\stackrel{-4^3}{-64}\\\\ x&-x^3 \end{array}~\hspace{5em}\boxed{y=-x^3}~~\checkmark

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