In 1980, median family income was about $18,000, and in 2000 it was about $42,000. find the slope of the line passing through the points (1980, 18000) and (2000, 42000)

In 1980, median family income was about $18,000, and in 2000 it was about $42,000. find the slope of the line passing through the points (1980, 18000) and (2000, 42000)

In 1980, median family income was about $18,000, and in 2000 it was about $42,000. find the slope of the line passing through the points (1980, 18000) and (2000, 42000)

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