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Find all numbers \(a\) for which the graph of  \(y=x^{2}+a\) and the graph of \(y=ax\) intersect. Express your answer in interval notation.

 Jan 20, 2020
 #1
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The set of all a that works is [4,inf). 

 Jan 20, 2020
 #2
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please explain. And are there any possible negative values

 Jan 20, 2020
 #3
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Actually, I got the correct answer, its (-inf, 0] \cup [4, inf)

 Jan 20, 2020

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