The axis of symmetry of a quadratic equation is x is equal to negative 3 If one of the zeroes of the equation is 4 , what is the other zero?

The axis of symmetry lies halfway between the two zeroes, so their average is −3. Let the other zero be r: (4 + r) / 2 = −3, which gives 4 + r = −6 and r = −10. The other zero is negative 10, choice B.

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