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What are the coordinates of the vertex

What are the coordinates of the vertex-example-1
User Dougkramer
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Get the equation in the form y = ax2 + bx + c. Calculate -b / 2a. This is the x-coordinate of the vertex. To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y.
User Le Qs
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