Determine the equation for the quadratic relationship graphed below.

Step-by-step explanation:

Hello, please consider the following.

We can read from the graph that the vertex is (1,-4) , it means that the equation is, a being a real number.

And the point (0,-1) is on the graph so we can write.

So the equation is.

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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