#### Answer

a. $(2002, 1210)$ $(2008, 2350)$
b. $190$
c. The price of an acre of farmland increases by $190$ dollars per year.

#### Work Step by Step

a.
Let $x$ be the year.
Let $y$ be the average price of an acre of U.S. farmland.
$(2002, 1210)$ $(2008, 2350)$
b.
$\frac{2350-1210}{2008-2002}=\frac{1140}{6}=190$
c.
The slope in this case means the change in price of an acre of farmland per year. In this case, the price increases by 190 dollars per year.