As shown in the figure, in the plane rectangular coordinate system, the quadrilateral ABCD is an isosceles trapezoid, where the coordinate of point B is (- 1,0), and point a is seated

1. Consider BC = 4, Bo = 1. So C (0,3)
Because y = a (x + 1) (x-3) passes a (- 3,6)
So a = 1 / 2
So y = 1 / 2x2-x-3 / 2

RELATED INFORMATIONS

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