Quiz interactif : Algèbre et Géométrie — 2ème année secondaire

Question 1 sur 10 10:00

[{"id":68172,"question":"Quelle est la solution de l'équation 3x + 5 = 20 ?","option_a":"x = 5","option_b":"x = 15","option_c":"x = 45\/3","option_d":"x = 25\/3","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x + 5 = 20 → 3x = 15 → x = 5. La solution est donc x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68173,"question":"Le théorème de Pythagore s'applique-t-il à tous les triangles ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le théorème de Pythagore ne s'applique qu'aux triangles rectangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68174,"question":"Quelle est la forme réduite de l'expression 2(x + 3) + 4x ?","option_a":"6x + 6","option_b":"6x + 3","option_c":"2x + 6","option_d":"4x + 6","option_e":"","option_f":"","bonne_reponse":"A","explication":"2(x + 3) + 4x = 2x + 6 + 4x = 6x + 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68175,"question":"Si f(x) = 2x² - 3x + 1, quelle est l'image de 2 par f ?","option_a":"3","option_b":"5","option_c":"7","option_d":"9","option_e":"","option_f":"","bonne_reponse":"B","explication":"f(2) = 2*(2)² - 3*2 + 1 = 8 - 6 + 1 = 3. L'image de 2 est 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68176,"question":"La fonction f(x) = -2x + 5 est-elle croissante ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le coefficient directeur est -2 (négatif), donc la fonction est décroissante.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68177,"question":"Quelle est l'aire d'un triangle de base 6 cm et de hauteur 4 cm ?","option_a":"10 cm²","option_b":"12 cm²","option_c":"24 cm²","option_d":"16 cm²","option_e":"","option_f":"","bonne_reponse":"B","explication":"Aire = (base * hauteur) \/ 2 = (6 * 4) \/ 2 = 12 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68178,"question":"Résoudre l'inéquation 2x - 7 \u003E 3.","option_a":"x \u003E 5","option_b":"x \u003C 5","option_c":"x \u003E 2","option_d":"x \u003C 2","option_e":"","option_f":"","bonne_reponse":"A","explication":"2x - 7 \u003E 3 → 2x \u003E 10 → x \u003E 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68179,"question":"Le volume d'un cube d'arête 3 cm est-il égal à 27 cm³ ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Volume = arête³ = 3³ = 27 cm³. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68180,"question":"Quelle est la représentation graphique d'une fonction affine ?","option_a":"Une droite","option_b":"Une parabole","option_c":"Un cercle","option_d":"Une hyperbole","option_e":"","option_f":"","bonne_reponse":"A","explication":"Une fonction affine est représentée par une droite dans un repère cartésien.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68181,"question":"Si deux droites sont parallèles, leurs coefficients directeurs sont-ils égaux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Deux droites parallèles ont le même coefficient directeur (pente).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]