f(x) = x² + kx + 9 has the range [0, ∞). What is k? | StemPy Lab

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f(x) = x² + kx + 9 has the range [0, ∞). What is k? | StemPy Lab

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f(x) = x² + kx + 9 has the range [0, ∞). What is k?

MathematicsHardHigh School (11–12)Functions and Calculus › Graphs of Functions

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$f(x) = x^2 + kx + 9$ has the range $[0, \infty)$ . What is $k$ ?

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← What is [√50] + [-√10]?Count the whole numbers whose distance from -1 on the number line is less than 4, that is, with |x + 1| < 4. →

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