The graph of the function y = a(x + 6)(x + 8) has an axis of symmetry

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The graph of the function y = a(x + 6)(x + 8) has an axis of symmetry at x = k. What is the value of k? 

A) -7 

B) -6 

C) 7 

D) 8

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McGraw-Hill Education SAT 2017

ISBN: 9781259641657

1st Edition

Authors: Christopher Black, Mark Anestis

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