8x+y=300

The elevator in a trade center is moving down from a height of 300 feet. The equation above can be used to model the height of an elevator, y, above the lobby. Where x is the time in seconds. If the ordered pair (x, y) satisfies the equation, what does (37.5,0) mean?

A. An elevator stops at a height of 37.5

B. The elevator is moving down at a constant speed of 37.5 feet/seconds.

C. The elevator moves 37.5 feet down from the lobby.

D. The elevator takes 37.5 seconds to move down to the lobby.

Question

Mathematics

Guest

8 September, 14:36

8x+y=300

The elevator in a trade center is moving down from a height of 300 feet. The equation above can be used to model the height of an elevator, y, above the lobby. Where x is the time in seconds. If the ordered pair (x, y) satisfies the equation, what does (37.5,0) mean?

A. An elevator stops at a height of 37.5

B. The elevator is moving down at a constant speed of 37.5 feet/seconds.

C. The elevator moves 37.5 feet down from the lobby.

D. The elevator takes 37.5 seconds to move down to the lobby.

+5

Answers (1)

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Livia · Answer 1

D. The elevator takes 37.5 seconds to move down to the lobby.

8x+y=300

y = 300-8x

y = 300 - 8 (37.5)

y = 300-300

y = 0

wheb y = 0 that means that the height is 0