algebra
posted by Norma .
in 1992, the life expectancy of males in a certain country was 67.5 years. In 1997, it was 69.9 years. let E represent the life expectancy in years t and let t represent the number os years since 1992. The linear function E(t) that fits the data is

slope = m = (69.9  67.5) / (9792)
e = m t + 67.5 
slope is (69.967.5)/5
E= slope*t+67.5 
thank you