4. The graph of a quadratic function defined by the equation y = a (x - h) ^ 2 + k when a is not equal to 0, h is equal to 0 and k is not 0, the parabola with the inflection point or points. highest or lowest point is at (h, k) and the axis of symmetry is the line x = h summarizes the characteristics of the graph defined by the equation Y = a (x - h) ^ 2 + K ! When a> 0 is parabolic face. The lowest point is at (h, k) = k minimum value when a <0 is inverted parabola. The highest point is at (h, k) = K max ! If k> 0 inflection point on the X axis if k <0 inflection point on the axis X ! Symmetry axis is linear equations axis of symmetry is x = h x = h ! If h> 0 the symmetry axis on the left of the Y , if h <0 the symmetry axis on the right hand side of the axis Y ! If a graph and k are not cut with the same X-axis , and k is a graph with different axis X 5. graph defined by the equation y = ax ^ 2 + bx + c, where a is not 0, the graph. Should the equation in the form y = a (x - h) ^ 2 + k to make the graph easier by the equation y = ax ^ 2 + bx + c to change the form y = a (x. - h) ^ 2 + k by using knowledge of a perfect square.
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