Question

A feather blew out of a bird nest 10 feet in the air. It drifted to the ground at a constant rate of 2 feet per second.
Write an equation that shows the relationship between the elevation of the feather, y, and the number of seconds it has been falling, x.
y=

Answer 1

y = 10 − 2x

(Here x is seconds, y is feet above ground. Domain: 0 ≤ x ≤ 5, since it hits the ground at x = 5 s.)