SOLUTION: Neil gets in an elevator at the 30th floor and begins to descend at a speed of 8 feet per second. After 12 seconds, the elevator is 240 feet above the ground. Let y= the height in

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Neil gets in an elevator at the 30th floor and begins to descend at a speed of 8 feet per second. After 12 seconds, the elevator is 240 feet above the ground. Let y= the height in       Log On


   



Question 1064455: Neil gets in an elevator at the 30th floor and begins to descend at a speed of 8 feet per second. After 12 seconds, the elevator is 240 feet above the ground. Let y= the height in feet of the elevator and let x= the seconds after Neil got in. Write an equation to show the relationship between the independent and dependent variables. Thank you!!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
So in 12 seconds he travels,
8%2A12=96ft
So he started at 240%2B96=336ft
(0,336)
(12,240)
Slope:
m=%28240-336%29%2F%2812-0%29=-96%2F12=-8
Point slope form of a line,
y-336=-8%28x-0%29
y=-8x%2B336