f(x) = x2 - kx - 3
f(2) = 4 - 2k - 3 = 9
-2k + 1 = 9
-2k = 8
k = -4
Minah F.
asked • 04/27/15SAT PREP 2015
If f(x)=X^2-kx-3 and f(2)=9, then k equals what number?
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