The parabola opens downward.

The vertex is at point (2 comma 28).

The parabola passes through the following points:

(0 comma 8.4)

(2 comma 28)

(4 comma 8.4)

Question

An object was launched upward from a platform. The graph shown models the height above ground, $y$ , in meters, of the object $x$ seconds after it was launched. For which of the following intervals of time was the height of the object increasing for the entire interval?

Accepted Answer

Choice A is correct. It's given that the variable y represents the height, in meters, of the object above the ground. The graph shows that the height of the object was increasing from x = 0 to x = 2 , and decreasing from x = 2 to x = 4 . Therefore, the height of the object was increasing for the entire interval of time from x = 0 to x = 2 . Choice B is incorrect. The height of the object wasn't increasing for this entire interval of time, as it was decreasing from x = 2 to x = 4 . Choice C is incorrect. The height of the object was decreasing, not increasing, for this entire interval of time. Choice D is incorrect. The height of the object was decreasing, not increasing, for this entire interval of time.

Question the-pa