# The price of a necklace was first increased 50% and later decreased 50%.

**Question description**

Optional:

Given a coordinate plane with points A(0,0), B(3,-4) and C(6,0). Give the coordinates of point D so that ABCD is a parallelogram that is not a rhombus. Explain why the coordinates of point D satisfy the conditions or argue that its is impossible to find such a point. Reference definitions in your response

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