The demand functions for two products are given below. p₁, p₂, q₁, and q₂ are the prices (in dollars) and quantities for products 1 and 2.
$\displaystyle {\left\lbrace\begin{array}{ccc} {q}_{{1}}&=&{1800}-{2}{p}_{{1}}+{2}{p}_{{2}}\\{q}_{{2}}&=&{1700}+{3}{p}_{{1}}-{2}{p}_{{2}}\end{array}\right.}$

What is the quantity demanded for each when the price for product 1 is $70 per item and the price for product 2 is $60 per item?
Demand for product 1:
Demand for product 2:

Are these two products complementary goods or substitute goods? Select an answer Substitutes Complementary