The slope of the linear model represents the average rate of population growth over time. Specifically, it indicates how much the population increases (or decreases) on average for each unit increase in time.
The y-intercept of the linear model represents the estimated population of the city at the starting point of the given time period (1900 in this case). It is the value of the population when time is equal to zero.
Using trend lines quick check question 2
The population growth of a city since 1900 is represented by a linear model. Interpret the slope and the y-intercept.
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