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For the function y=(x-5)(x+2) please explain the following questions. For the function...
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The function y=(x-5)(x+2) is that of a parabola.
=> y = x^2 - 3x - 10
=> y = (x - 3/2)^2 - 49/4
The x-intercepts of the graph are the solution of the equation (x - 5)(x + 2) = 0 which gives x = 5 and x = -2.
The axis of symmetry is: x = 3/2
The vertex is (3/2, -49/4)
The graph of the function is given below with the axis shown in red.
Posted by justaguide on October 9, 2012 at 1:32 AM (Answer #1)
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