Question

Use the midpoint formula to estimate the sales of cars, inc. in 2009, given the sales in 2008 in 2010. Assume that the sales of cars, inc. Sales always follow a linear pattern.

Answer 1

The points given are:

(2008, 240) and (2010, 280)

The formula for calculating mid-point is:

$(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

From the point given:

x₁=2008 y₁=240 x₂=2010 y₂=280

$(\frac{2008+2010}{2},\frac{240+280}{2})$$=(\frac{4018}{2},\frac{520}{2})$$=(2009,260)$

Therefore, the sales of cars in 2009 is 260 millions.