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I need to know How I can do this Please don't just write the answer explain what part of of the quadratic standard equation means

I need to know How I can do this Please don't just write the answer explain what part-example-1
User Thanh Vu
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it is a negative graph and if you take the peak- the y intercept, it gives you the value of b. make that value negative and you should get your answer. i also put my answer in the comments if you wanted it, but you said you didn’t so..
User Iod
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