A hawk swoops down from its perch 30 feet in a tree to catch field mice. It follows the function h(t)=6t2−24t+30

, where t
is time in seconds and h
is height in feet.

Part A: Graph this function. Link to Desmos calculator

Part B: What is the initial height of the hawk? Write your answer as an ordered pair

Part C: At which point is the hawk at it's lowest height? Write your answer as an ordered pair

Part D: The hawk will be at it's lowest point at time
seconds at a height of
feet

1 answer

Let's take your questions step by step.

Part A: Graph the Function

You can graph the function \( h(t) = 6t^2 - 24t + 30 \) using the Desmos graphing calculator. Here is how you can set it up:

  1. Go to the Desmos calculator website.
  2. Enter the equation: h(t) = 6t^2 - 24t + 30.
  3. Observe the parabola which opens upwards, as the coefficient of \( t^2 \) is positive.

Part B: Initial Height of the Hawk

To find the initial height of the hawk, we evaluate \( h(t) \) at \( t = 0 \):

\[ h(0) = 6(0)^2 - 24(0) + 30 = 30 \]

Therefore, the initial height of the hawk is 30 feet. The ordered pair for the initial height is:

Ordered Pair: \( (0, 30) \)

Part C: Lowest Height of the Hawk

To find the lowest height of the hawk, we need to find the vertex of the parabola represented by the function \( h(t) = 6t^2 - 24t + 30 \). The \( t \)-coordinate of the vertex can be found using the formula:

\[ t = -\frac{b}{2a} \]

Here, \( a = 6 \) and \( b = -24 \).

\[ t = -\frac{-24}{2 \cdot 6} = \frac{24}{12} = 2 \]

Now we can find the height at \( t = 2 \):

\[ h(2) = 6(2)^2 - 24(2) + 30 = 6(4) - 48 + 30 = 24 - 48 + 30 = 6 \]

Thus, the lowest height of the hawk is 6 feet. The ordered pair for this point is:

Ordered Pair: \( (2, 6) \)

Part D: Summary of the Lowest Point

The hawk will be at its lowest point at:

  • Time: \( 2 \) seconds
  • Height: \( 6 \) feet

So you can summarize:

  • The hawk will be at its lowest point at time 2 seconds at a height of 6 feet.