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Monday, September 9, 2013

SP#1: Unit E Concept 1 - Graphing a quadratic and identifying all key parts


1)this is a quadratic in standard form. The standard form is  f(x)=ax^2=bx=c. In order to graph them more sufficiently we must complete the square so that they can be in the parent function form. The graph will include 2 and 4 points:the vertex, the y-intercept, and up to two x-intercepts, as well as one dotted line which s the axis of symmetry

2).Once you have completed the square, to identify the points and intercepts you need to understand how to find them. to find the vertex you must use the equation (h,k) It could be  a maximum or a minimum. The x-intercepts are the solutions. You set the equation equal to zero and then you solve. To find the y intercept you use the standard form of the problem and plug in 0 for x and then solve  Finally the axis of symmetry divides the parabola so you set it up like x=h.

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