Asked by James
In 1995, the life expectancy of males in a certain country was 70.1 years. In 1999, it was 73.6 years. Let E represent the number of years since 1995.
The linear function E(t) that fits the data is E(t) =_____ t +______.(Round to the nearest tenth)
Use the function to predict the life expectancy of males in 2004.
E(9) =_____.(Round to the nearest tenth)
The linear function E(t) that fits the data is E(t) =_____ t +______.(Round to the nearest tenth)
Use the function to predict the life expectancy of males in 2004.
E(9) =_____.(Round to the nearest tenth)
Answers
Answered by
MathMate
Two given points are
for year 1995, P1(0,70.1) and
for year 1999, P2(4,73.6)
The linear function that passes through these two points is given by:
(y-y1)/(y2-y1)=(x-x1)/(x2-x1)
Substitute x1=0,y1=70.1, x2=4,y2=73.6, solve for y in terms of x.
If you wish, you could post your answer for checking.
for year 1995, P1(0,70.1) and
for year 1999, P2(4,73.6)
The linear function that passes through these two points is given by:
(y-y1)/(y2-y1)=(x-x1)/(x2-x1)
Substitute x1=0,y1=70.1, x2=4,y2=73.6, solve for y in terms of x.
If you wish, you could post your answer for checking.