Algebra 1EasyWhere the Formulas Come From ShareWhere the Formulas Come From · Easy problemThe axis of symmetry of the parabola y=3(x+6)2−1y = 3(x+6)^2 - 1y=3(x+6)2−1 is the vertical line x=hx = hx=h. What is hhh?Check Show answer Walk through it step by step Practice more like this Review this concept