SOLUTION: Please help....I am so lost In 1992, the life expectancy of males in a certain country was 66.8 years. In 1996, it was 70.5 years. Let E represent the life expectancy in year t

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Question 328837: Please help....I am so lost
In 1992, the life expectancy of males in a certain country was 66.8 years. In 1996, it was 70.5 years. Let E represent the life expectancy in year t and let t represent the numbers of years since 1992.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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In 1992, the life expectancy of males in a certain country was 66.8 years.
In 1996, it was 70.5 years.
Let E represent the life expectancy in year t and let t represent the numbers of years since 1992.
:
Find the slope
In 1992; x1=0 and y1=66.8
In 1996; x2=4 and y2=70.5
:
Find the slope (m) using the slope equation: m = %28y2-y1%29%2F%28x2-x1%29
m = %2870.5-66.8%29%2F%284+-+0%29%29 = %283.7%29%2F%284%29 = .925
:
Use the point/slope formula to write the equation; y - y1 = m(x - x1)
y - 66.8 = .925(x - 0)
y = .925x + 66.8
:
therefore:
The Linear function E(t) that fits the data is.
E(t)= .925t + 66.8
: