What is the sign of $a$ in the quadratic function $y(x)=ax^2+bx+c$ corresponding to the graph below?
Antwoord 1 correct
Correct
Antwoord 2 optie
$a<0$
Antwoord 2 correct
Fout
Antwoord 3 optie
This graph does not belong to a quadratic function.
Antwoord 3 correct
Fout
Antwoord 1 optie
$a>0$
Antwoord 1 feedback
Correct: This is an upward openend parabola and hence, $a>0$.
Go on.
Go on.
Antwoord 2 feedback
Antwoord 3 feedback