Problem: The graph below shows the function g, where g(x) = k(x+3)(x-3) for some constant k. If g(a-1.2)=0 and a>0, what is the value of a?
Last edited by CaptainBlack; May 31st 2011 at 12:21 AM.
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Originally Posted by yety124 Graph: http://i55.tinypic.com/amtdsy.jpg Problem: The graph above shows the function g, where g(x) = k(x+3)(x-3) for some constant k. If g(a-1.2)=0 and a>0, what is the value of a? If you plug a-1.2 in for x, you get . So either or ; however, a>0...so which answer will it be?