What is the y-intercept of the polynomial f(x) defined below? Write the y-value only.

f(x)=-x⁴-9x²-1

1 answer

The y-intercept of a function is found by evaluating the function at \( x = 0 \).

For the polynomial \( f(x) = -x^4 - 9x^2 - 1 \):

\[ f(0) = -0^4 - 9(0)^2 - 1 = -1 \]

Thus, the y-intercept is

\(-1\)

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