Given f(x) and g(x) = k· f(x), use the graph to determine the value of k

if g(x) = k•f(x), then we know g(-3) = k•f(-3).  I'd pick x=-3 because of the two dots on the graph, which tell us:

    g(-3) = -2   and   f(-3) = 1

So, -2 = k•1 or k = –2

ok then what happened.

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