Problema Solution
Y is initially 20ft below sea level and rises at 5 ft per second. Write it in slope intercept form
Answer provided by our tutors
let x denote the time in seconds, y the rise in ft
y = mx + b, where m and b are constants
initially for x = 0, y = 20 follows b = 20
for x = 1, the level rises by 5 and it will be 20 + 5 = 25 ft
25 = m*1 + 20
m = 25 - 20
m = 5
the slope intercept form of the equation is:
y = 5x + 20.