D

Clare throws a rock into the lake. The graph shows the rock's height above the water, in feet, as a function of time in seconds. Select all the statements that describe this situation.

4 viewed last edited 15 days ago
Anonymous
0


A:

The vertex of the graph is (0.75,29)

B:

The y-intercept of the graph is (2.1,0) .

C:

Clare just dropped the rock into the lake.

D:

The maximum height of the rock is about 20 feet.

E:

The rock hits the surface of the water after about 2.1 seconds.

F:

Clare tossed the rock up into the air from a point 20 feet above the water.

Sangeetha Pulapaka
0

A, E, F are the correct options.


B is not true because the y-intercept is at (0,20) and not at (2.1,0)


C is not true because Clare dropped the rock into the lake at 2.1 seconds.


D is not true because the maximum height of the rock is 29 feet as shown by the vertex.


Skills you may want to recall:

What is the vertex of a parabola:

https://www.maplesoft.com/support/help/maple/view.aspx?path=MathApps%2FVertexOfAParabola#:~:text=The%20vertex%20of%20a%20parabola,point)%20of%20the%20graph%20if%20.