Question

A sociologist recorded the estimated life expectancies of women born in Center City. Use the data from women born in 1970 and 2000 to create a linear model that predicts the life expectancy, in years, (y) of a female born in a given year (x). . . Year Born Life Expectancy (years). 1960 66.1. 1970 67.6. 1980 70.1. 1990 71.9. 2000 74.0. 2010 75.9. . Which equation represents this linear model? a. y = 0.213x – 352.0 b. y = 0.213x – 358.4 c. y = 4.695x – 9181.6 d. y = 4.695x – 9322.4

Answer 1

Y = 0.213x – 352.0  represents this linear model shown in the data table.
Plug in the values of x into the equation for a double check.
Let's try 1980.

y = 0.213(1980) – 352.0
y = 69.74
which is closest to the 70.1 whereas other options do not satisfy the condition. 

Answer 2

A. y = 0.213x – 352.7