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The squared part = 0 when x =3 (axis of symmetry) When x=3, y=4 (vertex) Vertex form of a parabola: y = (x-h)2+ k y = (x-3)2+ 4 the line x=3 is the: axis of symmetry ? (3,4) is the: vertex ? 4 3 2 x y = ( -3)2+ 4 y = (x-3)2+ 4 y = ( -3)2+ 4 y = ( -3)2+ 4 3 4 2 5 4 ? y 5 ? 4 3 2 x y = ( -3)2+ 4 y = (x-3)2+ 4 y = ( -3)2+ 4 y = ( -3)2+ 4 4 3 2 5 4 y 5 Vertex This is the vertex form equation of a parabola: What x value cancels out (x-2) ??? ( , ) y =(x -2)2+1 The number at the end is the y value Vertex 2 -2 2 -2 4 -4 Describe this vertex: minimum (low) maximum (high) y =(x -2)2+1 Vertex at (2,1) Vertex This is the vertex form equation of a parabola: What x value cancels out (x+2) ??? ( , ) y =-(x+2)2+3 The number at the end is the y value Vertex 2 -2 2 -2 4 -4 Describe this vertex: minimum (low) maximum (high) y =-(x+2)2+3 Vertex at (-2,3) Vertex This is the vertex form equation of a parabola: What x value cancels out (x-1) ??? ( , ) y =(x-1)2 -3 The number at the end is the y value Vertex 2 -2 2 -2 4 -4 Describe this vertex: minimum (low) maximum (high) y =(x-1)2-3 Vertex at (1,-3) Vertex This is the vertex form equation of a parabola: What x value cancels out (x+1) ??? ( , ) y =-(x+1)2 +2 The number at the end is the y value Vertex 2 -2 2 -2 4 -4 Describe this vertex: minimum (low) maximum (high) y =-(x+1)2+2 Vertex at (-1,2) y= (x + 4)2 -5 y= -(x - 8)2 +1 ( , ) ( , ) Vertex Vertex y= (x - 9)2 +3 y= -(x + 7)2 -6 ( , ) ( , ) Vertex Vertex The End |