Its graph is shown Thereof, how do you tell if a parabola is vertical or horizontal?The standard form is (x h)2= 4p (y k), where the focusis (h, k p) and the directrix is y = k p If the parabola is rotatedso that its vertex is (h,k) and its axis of symmetry is parallel to thexaxis, it has an equation of (y k)2= 4p (x h), where thefocus is (h p, k) and the directrix is x = h pAnd directrix, write down its equation in the form (xh)2 = 4p(yk) or (yk)2 = 4p(xh) • Graph a parabola given in the form (x h)2 = 4p(y k) or (y k)2 = 4p(x h) and locate its focus, directrix, and axis of symmetry • Givenanequationofaparabolainageneralformlike4x x8y57 = 0,rewrite it in a standard form (xh)2 = 4p(yk) or (yk)2 = 4p(xh) 225
Parabola Definition And Equation