13 14
A paper airplane is thrown out a window.
Its height is represented by the equation
y - 7 = -2(x - 3), where x represents time
in seconds and y represents height in feet.
What is the height of the window, and how
quickly does the airplane fall?
A
The window is 7 feet high, and the
airplane falls 3 feet per second.
The window is 13 feet high, and the
airplane falls 2 feet per second.
с
The window is 11 feet high, and the
airplane falls 4 feet per second.
D
The window is 2 feet high, and the
airplane falls 13 feet per second.