Which of the following best describes the graph below? N+
5
-4
-3 -2 -1
1
- 1
3
-2
-3
O A. It is a function, but it is not one-to-one.
B. It is a one-to-one function.
O C. It is not a function.
OD. It is a many-to-one function.

C. it is not a function

Step-by-step explanation:

It fails the horizontal and vertical line test.

So for projectile motion questions, we use the Cartesian equations.
Given that s(t) is the height of the projectile at an arbitrary time, t, we want the height of the projectile to equal to zero in order to find its flight time.

Let s(t) = 0.

Now, the initial velocity of the projectile is given to be 19.6, and the initial height is 24.5.

Substitute those in to find: