Posted by **Joel** on Monday, June 6, 2011 at 3:20pm.

if a parabola is defined by f(x)=ax+bx+c,where a straight line is defined by g(x)=-1/2x.then Df=R,Rf=(-2,infinity) and b/2a=2

determine a,b and c and write down the equation of f.

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