Find the equation of the axis of symmetry and the coorinates of the vertex of the graph of the function y=4x^2+5x-1 a.)x=-5/8; vertex: (-5/8,-5 11/16) b.)x=5/8; vertex: (5/8,3 11/16) c.)x=5/8; vertex: (5/8, 4 5/8) d.)x=-5/8; vertex: (-5/8,-2 9/16)