Replace x with 3 and y with 6 and see which equation is true.
A) y = 7x - 15
6 = 7(3) - 15
6 = 21 - 15
6 = 6
The point (3, 6) makes the first equation true, so the answer is A). Point (3, 6) does not make any other choice a true equation. Answer is definitely A).
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