Quiz interactif : Fonctions, équations et géométrie — 2ème année secondaire

Question 1 sur 10 10:00

[{"id":24658,"question":"Quelle est l'image de 3 par la fonction f(x) = 2x + 1 ?","option_a":"5","option_b":"7","option_c":"6","option_d":"8","option_e":"","option_f":"","bonne_reponse":"B","explication":"Remplacer x par 3 dans l'expression : f(3) = 2*3 + 1 = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24659,"question":"Une fonction affine a toujours une représentation graphique en ligne droite.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Toutes les fonctions affines sont représentées par une droite, car leur forme générale est f(x)=ax+b.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24660,"question":"Résoudre l'équation 3x - 5 = 7.","option_a":"x = 4","option_b":"x = 2","option_c":"x = 12","option_d":"x = -4","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x = 12 → x = 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24661,"question":"Le théorème de Pythagore s'applique uniquement aux triangles rectangles.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le théorème de Pythagore est valable uniquement pour les triangles rectangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24662,"question":"Quelle est la pente de la droite d'équation y = -3x + 2 ?","option_a":"-3","option_b":"3","option_c":"2","option_d":"-2","option_e":"","option_f":"","bonne_reponse":"A","explication":"La pente est le coefficient de x, soit -3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24663,"question":"La moyenne de 5, 7 et 9 est égale à 7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"(5+7+9)\/3 = 21\/3 = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24664,"question":"Résoudre l'inéquation 2x + 3 \u003E 7.","option_a":"x \u003E 2","option_b":"x \u003E 5","option_c":"x \u003C 2","option_d":"x \u003C 5","option_e":"","option_f":"","bonne_reponse":"A","explication":"2x \u003E 4 → x \u003E 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24665,"question":"Le coefficient directeur d'une droite horizontale est égal à 0.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Une droite horizontale a une pente nulle, donc son coefficient directeur est 0.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24666,"question":"Quelle est la solution de l'équation x² - 4 = 0 ?","option_a":"x = 2","option_b":"x = -2","option_c":"x = 2 ou x = -2","option_d":"x = 4","option_e":"","option_f":"","bonne_reponse":"C","explication":"x² = 4 → x = 2 ou x = -2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24667,"question":"L'écart-type mesure la dispersion des données autour de la moyenne.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'écart-type quantifie la variabilité des données par rapport à la moyenne.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]