can someone answer this please .

Question

Kevin gets on an elevator in a skyscraper. The elevator starts to move at a rate of -15ft/s. After 4 seconds on the elevator, Kevin is 260 ft from the ground floor of the building. What value in the Slope Intercept Form of an equation does the rate of change represent

Answer 1

y = m x + b

at x = 4 sec , y = 260 , m= -15 ft/s, the minus sign is because the elevator going down

260 = - 15 ( 4) + b

260 = - 60 + b

b= 320 ft

our equation will be

y = - 15 x + 320

Answer 2

The rate of change, -15 ft/sec, would be the "m" in y = mx + b.