what is the domain of f(x)=-z^2-4z+7

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what is the domain of f(x)=-z^2-4z+7

Guest Oct 29, 2014

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Best Answer

+118724

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Your notation is not correct. (I don't think)

f(x)=-z^2-4z+7

you have f(x) but then you have used z not x so it doesn't make sense.

however, if you mean

f(x)=-x^2-4x+7

then this is a concave down parabola.

The domain is all real x.

Melody Oct 29, 2014

1⁺⁰ Answers

+118724

+10

Best Answer

Your notation is not correct. (I don't think)

f(x)=-z^2-4z+7

you have f(x) but then you have used z not x so it doesn't make sense.

however, if you mean

f(x)=-x^2-4x+7

then this is a concave down parabola.

The domain is all real x.

Melody Oct 29, 2014

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