The bar graph gives the life- expectancy for American men and women born in six selected years. In Exercises 89-90, you will use the data to obtain models for life expectancy and make predictions about how long American men and women will live in the future . Use the data for females shown in the bar graph at the bottom of the previous column to solve this exercise. a. Let x represent the number of birth years after 1960 and let y represent female life expectancy. Create a scatter plot that displays the data as a set of six points in a rectangular coordinate system . b . Draw a line through the two points that show female life expectancies for 1970 and 2000. Use the coordinates of these points to write a linear function that models life expectancy, E ( x ), for American women born x years after 1960. Round the slope to two decimal places. c. Use the function from part (b) to project the life expectancy of American women born in 2020.
The bar graph gives the life- expectancy for American men and women born in six selected years. In Exercises 89-90, you will use the data to obtain models for life expectancy and make predictions about how long American men and women will live in the future . Use the data for females shown in the bar graph at the bottom of the previous column to solve this exercise. a. Let x represent the number of birth years after 1960 and let y represent female life expectancy. Create a scatter plot that displays the data as a set of six points in a rectangular coordinate system . b . Draw a line through the two points that show female life expectancies for 1970 and 2000. Use the coordinates of these points to write a linear function that models life expectancy, E ( x ), for American women born x years after 1960. Round the slope to two decimal places. c. Use the function from part (b) to project the life expectancy of American women born in 2020.
Solution Summary: The author analyzes the scatter plot of the data as a set of six points, and the linear function that models life expectancy for women born after 1960.
The bar graph gives the life- expectancy for American men and women born in six selected years. In Exercises 89-90, youwilluse the data to obtain models for life expectancy and make predictions about how long American men and women will live in the future
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Use the data for females shown in the bar graph at the bottom of the previous column to solve this exercise.
a. Let x represent the number of birth years after 1960 and let y represent female life expectancy. Create a scatter plot that displays the data as a set of six points in a rectangular coordinate system.
b. Draw a line through the two points that show female life expectancies for 1970 and 2000. Use the coordinates of these points to write a linear function that models life expectancy, E (x ), for American women born x years after 1960. Round the slope to two decimal places.
c. Use the function from part (b) to project the life expectancy of American women born in 2020.
System that uses coordinates to uniquely determine the position of points. The most common coordinate system is the Cartesian system, where points are given by distance along a horizontal x-axis and vertical y-axis from the origin. A polar coordinate system locates a point by its direction relative to a reference direction and its distance from a given point. In three dimensions, it leads to cylindrical and spherical coordinates.
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