Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Assenyala quin del següents vectors pot ser el director de la recta [open curly brackets table row cell # e1 equals 0 end cell row cell # e2 equals 0 end cell end table close] : [-18,2,-10]; [-18,2,10]; [-18,-2,10]; [18,2,10]
Right answer summary: [-18,2,10]
Question state: todo