Answer:Explanation given below.Step-by-step explanation:The first step is to put the parabola in the form [tex]ax^2+bx+c[/tex] , which is the standard form of a parabolaNote: a is the coefficient before x^2 term, b is the coefficient before x term, and c is the independent constant termThe axis of symmetry divides the parabola symmetrically. The axis of symmetry has the equation [tex]x=-\frac{b}{2a}[/tex]Where a and b are the respective values shown aboveSo, that is how you get the axis of symmetry of any parabola.