2.6k views
13 votes
A ball is thrown in the air from the edge of a 48 foot high cliff so that eventually it lands on the ground.

User Hans W
by
8.1k points

1 Answer

10 votes

Answer:

2.5 < x < 5.5

Explanation:

A ball is thrown into the air from the edge of a 48-foot-high cliff so that it eventually lands on the ground. The graph below shows the height, y, of the ball from the ground after x seconds. For which interval is the ball's height always decreasing? A. OSX s 2.5 BO< x < 5.5 C. 2.5 < x < 5.5 D. x 22 8 7 6 5 4 3

Solution:

A quadratic function is a function in the form of:

y = ax² + bx + c; where x, y are variables, a ≠ 0, a, b, c are complex numbers.

The shape of the graph of a quadratic function is a parabola. That is it increases to a maximum point and the begins to decrease, or it decreases to a minimum point and the begins to increase.

From the graph, we can see the height of the ball is increasing from 0 ≤ x ≤ 2.5. But when it reaches 2.5 (maximum point), it begins to decrease from 2.5 < x < 5.5

A ball is thrown in the air from the edge of a 48 foot high cliff so that eventually-example-1
User Yergo
by
8.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories