MCQM5652 · [1] A quadratic function is given by f(x) = 3x^2 - 12x + 7 . The equation of the axis of symmetry of the graph of f is x = Adfrac-122 × 3Bdfrac-(-12)2 × 7Cdfrac-32 × (-12)Ddfrac-(-12)2 × 3 Next question →