Answer
The y-intercept of the given equation is 71.6.
$\\$This means that American females born in 1950 has a life expectancy of 71.6 years.
Work Step by Step
The y-intercept can be found by setting $x=0$.
$\\\\$Doing this gives:
$\\\\y=0.16x+71.6
\\\\y=0.16(0) + 71.6
\\\\y=0+71.6
\\\\y=71.6$
