Consider the following population and year graph: find the slope of the line AB and using it find what will be the population in the year 2010.

Explanation

This line passes through the points `(1985,92)` and `(1995,97)`.
`:.` Slope of line `AB=(97-92)/(1995-1985)=(1)/(2)`
Let `X(2010,y)` be a point on this line.
`:.` Slope of line `BC=(y-97)/(2010-1995)=(y-97)/(15)`
`A`, `B`, `C` are collinear.
`:.` Slope of `BC=` Slope of `AB`
`implies (y-97)/(15)=(1)/(2)impliesy-97=7.5`
`implies y=104.5`
Therefore, populations in year `2010=104.5` crores.