
Concept explainers
Shown, again, is the
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,
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.

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Chapter 7 Solutions
Thinking Mathematically (7th Edition)
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