It should be 146.667 feet per second
Number 1 is 3 for the first question
Answer:
Undefined.
Step-by-step explanation:
We want to find the slope of the graph of the equation:

At the point (9, 0).
In other words, we want to evaluate dy/dx when <em>x</em> = 9 and <em>y</em> = 0.
Find dy/dx. We can take the derivative of both sides with respect to <em>x: </em>
![\displaystyle \begin{aligned} \frac{d}{dx}\left[ x^2 - y^2\right] = \frac{d}{dx}\left [ 81\right] \\ \\ 2x - 2y \frac{dy}{dx} &= 0 \\ \\ \frac{dy}{dx} = \frac{x}{y}\end{aligned}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cbegin%7Baligned%7D%20%5Cfrac%7Bd%7D%7Bdx%7D%5Cleft%5B%20x%5E2%20-%20y%5E2%5Cright%5D%20%3D%20%5Cfrac%7Bd%7D%7Bdx%7D%5Cleft%20%5B%2081%5Cright%5D%20%5C%5C%20%5C%5C%202x%20-%202y%20%5Cfrac%7Bdy%7D%7Bdx%7D%20%26%3D%200%20%5C%5C%20%5C%5C%20%5Cfrac%7Bdy%7D%7Bdx%7D%20%3D%20%5Cfrac%7Bx%7D%7By%7D%5Cend%7Baligned%7D)
Then the slope of the graph at the point (9, 0) will be:

In conclusion, the slope of the graph at the point (9, 0) is undefined.
Answer:
<u>2) Vertical scale does not begin with zero</u>
Answer:
It is the one on the bottom right
Step-by-step explanation:
First of all, we have to start at (0,0), so we can cross out the one on the top left and top right, as they does not.
Also, the one on the bottom right does not go back to the ground, though just stays in the air, but the one on the bottom right dows go back to the ground.
So, its the one on the bottom right