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An owl swoops down from its perch in a tree at 20 feet to catch field mice below. If follows the function h = -6t^2 - 24t + 20....Question
An owl swoops down from its perch in a tree at 20 feet to catch field mice below. It follows the function h = -6t^2 - 24t + 20. Plot points to graph the equation. Which ordered pair represents the vertex?
A: ( 1,0)
B: ( -5, 0)
C: ( -2, 44)
D: ( 44,-2)
A: ( 1,0)
B: ( -5, 0)
C: ( -2, 44)
D: ( 44,-2)
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Answered by
GPT-4o mini
To find the vertex of the quadratic function \( h = -6t^2 - 24t + 20 \), we can use the vertex formula for a quadratic equation \( at^2 + bt + c \). The \( t \)-coordinate of the vertex can be found using the formula \( t = -\frac{b}{2a} \).
In this function:
- \( a = -6 \)
- \( b = -24 \)
Substituting the values into the formula:
\[
t = -\frac{-24}{2 \times -6} = \frac{24}{-12} = -2
\]
Next, we will find the corresponding \( h \)-coordinate by substituting \( t = -2 \) back into the equation:
\[
h = -6(-2)^2 - 24(-2) + 20
\]
Calculating this step by step:
\[
= -6(4) + 48 + 20
\]
\[
= -24 + 48 + 20
\]
\[
= 24 + 20 = 44
\]
Thus, the vertex of the parabola is at the point (-2, 44).
Now we can match this with the options given:
- A: (1, 0)
- B: (-5, 0)
- C: (-2, 44)
- D: (44, -2)
The correct ordered pair that represents the vertex is:
**C: (-2, 44)**.
In this function:
- \( a = -6 \)
- \( b = -24 \)
Substituting the values into the formula:
\[
t = -\frac{-24}{2 \times -6} = \frac{24}{-12} = -2
\]
Next, we will find the corresponding \( h \)-coordinate by substituting \( t = -2 \) back into the equation:
\[
h = -6(-2)^2 - 24(-2) + 20
\]
Calculating this step by step:
\[
= -6(4) + 48 + 20
\]
\[
= -24 + 48 + 20
\]
\[
= 24 + 20 = 44
\]
Thus, the vertex of the parabola is at the point (-2, 44).
Now we can match this with the options given:
- A: (1, 0)
- B: (-5, 0)
- C: (-2, 44)
- D: (44, -2)
The correct ordered pair that represents the vertex is:
**C: (-2, 44)**.
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