Question

PLZ HELP URGENT !!!!!!!!!

The graph shows the height, y, in meters, of a rocket above sea level in terms of the time, t, in seconds, since it was launched. The rocket landed at sea level.
What does the x-intercept represent in this situation?
A) the time it took the rocket to return to sea level
B) the height from which the rocket was launched
C) the total distance the rocket flew while it was in flight
D) the time it took the rocket to reach the highest point in its flight

Answer 1

Hello!

The answer is: A) The time it took to the rocket to return to sea level.

Why?

Since the graph shows the height (y) in meters of a rocket above sea level in terms of the time (x), the x-intercept is the point where the height (y) is equal to the sea level (since it was launched from the sea level).

We can see that the point has an "x" value between 10 and 11 seconds and it means that it's the time that the rocket took to reach the height from it was launche. So at that point, the "y" coordinate of the rocket will be equal to the sea level (reference point).

Hence, the correct option is A) The time it took to the rocket to return to sea level.

Have a nice day!