Question

Solve the system of equations below by graphing them with a pencil and paper. Choose the correct ordered pair (b, u).

Answer 1

U = -b + 21 . . . (1)
u = -2b + 30 . . . (2)
Equating (1) and (2),
-b + 21 = -2b + 30
-b + 2b = 30 - 21
b = 9
u = -9 + 21 = 12

Therefore, (b, u) = (9, 12).