Solved: Shown, again, is the scatter plot that indicates a

Chapter 0, Problem 34

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Shown, again, is the scatter plot that indicates a relationship between the percentage of adult females in a country who are literate and the mortality of children under five. Also shown is a line that passes through or near the points. y x Percentage of Adult Females Who Are Literate Under-Five Mortality (per thousand) Literacy and Child Mortality 0 10 20 30 40 50 60 70 80 90 100 350 300 250 200 150 100 50 (60, 110) (0, 254) Source: United Nations a. According to the graph, what is the y-intercept of the line? Describe what this represents in this situation. b. Use the coordinates of the two points shown to compute the slope of the line. Describe what this means in terms of the rate of change. c. Use the y-intercept from part (a) and the slope from part (b) to write a linear function that models child mortality, f(x), per thousand, for children under five in a country where x% of adult women are literate. d. Use the function from part (c) to predict the mortality rate of children under five in a country where 50% of adult females are literate.