SOLUTION: what is the domain and range of f(x)=10-x^2

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Question 536412: what is the domain and range of f(x)=10-x^2
Answer by fcabanski(1391) About Me  (Show Source):
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The range is all real numbers because any number plugged in for x yields a real number value for y. Domain = (-inf, inf).


Graphing the function will show you the range.


graph%28+400%2C+400%2C+-5%2C+5%2C+-10%2C+10%2C+10-x%5E2+%29

From the graph, notice that the highest y-value is 10, then the graph goes down forever to -inf for y. So the range is (-inf, 10].


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