Today the ratio of the ages of Desai and Shinde is 3:4. Six years hence, Desai’s age will be 24 years. How old is Shinde today?
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For this case we have that by definition, the slope of a line is given by:
Where:
and
are two points through which the line passes.
According to the figure we have to, the line goes through:
Substituting we have:
Thus, the slope of the line is -1.
Answer: