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Unit 4 Test
Question 24 of 25
(4 points)
Attempt 1 of 1
(1) 1 h $25 \mathrm{~m}$ Remaining
1-10 Find $y$-intercept of a quadratic function (Application
9)
The height of a home run $x$ feet from home plate can be approximated by the function $f(x)=-0.00186 x^{2}+0.6282 x+2.1$. How high was the ball at the time it was hit?
The ball was feet high at the time it was hit.

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Final Answer: $\boxed{2.1}$

Steps

Step 1 ：The height of the ball at the time it was hit is the y-intercept of the function. The y-intercept is the value of the function when x equals 0. So, we need to substitute x=0 into the function and calculate the result.

Step 2 ：y_intercept = 2.1

Step 3 ：Final Answer: $\boxed{2.1}$

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