Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Solve the system by substitution. x - 4y = -31 2x - 4y = -34: (-3, 7); (-2, 6); (-2, -3); No solution
Right answer summary: (-3, 7)
Question state: todo
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Solve the system by substitution. x - 4y = -31 2x - 4y = -34: (-3, 7); (-2, 6); (-2, -3); No solution
Right answer summary: (-3, 7)
Question state: todo