we know that
g(x)=f(3/4x)
the transformation of f(x) to------------> f(3/4x)
means that
point (a,b) in graph of f(x) becomes a point (a/(3/4),b) in graph of f(3/4x)
therefore
point (-6,-5)-----> becomes a point (-6/(3/4),-5)-----> (-8,-5) in the graph of g(x)
the answer
the point is (-8,-5)