Answer:
Side length of a square game board is 11.916 inches.
Step-by-step explanation:
AD = 6·3 = 18 in.
AM = AB/2 = 6/2 = 3 in.
DN = CD/2 = 6/2 = 3in.
MN = AD - (AM+DN) = 18 - (3+3) =
12 in.
True, y=7 means its just a horizontal line running straight through the 7 on the vertical/y-axis.