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The answer depends on the form in which the quadratic function is given.

If it is y = ax2 + bx + c

then the x-coordinate of the turning point is -b/(2a)

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Q: What is the turning point in the graph of a quadratic function?
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Related questions

What name is given to the turning point also known as the maximum or minimum of the graph of a quadratic function?

vertex


How do you find the salient feature in a graph?

Depending on the graph, for a quadratic function the salient features are: X- intercept, Y-intercept and the turning point.


Is the graph of a quadratic function contains the point 0 0?

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