Quiz : Maîtrisez les bases des mathématiques en 1ère année secondaire !

Question 1 sur 10 10:00

[{"id":47801,"question":"Quelle est la solution de l'équation 3x + 5 = 20 ?","option_a":"x = 5","option_b":"x = 15","option_c":"x = 10","option_d":"x = 25\/3","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 3x + 5 = 20, soustrayez 5 des deux côtés : 3x = 15. Puis divisez par 3 : x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47802,"question":"La fonction f(x) = 2x + 3 est-elle une fonction affine ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Une fonction affine s'écrit sous la forme f(x) = ax + b, ce qui est le cas ici avec a = 2 et b = 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47803,"question":"Quel est le résultat de (2x + 5) - (x - 3) ?","option_a":"x + 8","option_b":"3x + 2","option_c":"x + 2","option_d":"2x + 8","option_e":"","option_f":"","bonne_reponse":"C","explication":"Développez : (2x + 5) - (x - 3) = 2x + 5 - x + 3 = x + 8.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47804,"question":"Dans un triangle rectangle, le carré de l'hypoténuse est égal à la somme des carrés des deux autres côtés. Vrai ou faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est l'énoncé du théorème de Pythagore, valable uniquement pour les triangles rectangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47805,"question":"Quelle est l'image de 4 par la fonction f(x) = -2x + 1 ?","option_a":"f(4) = -7","option_b":"f(4) = 9","option_c":"f(4) = 7","option_d":"f(4) = -9","option_e":"","option_f":"","bonne_reponse":"A","explication":"Calculez f(4) = -2*4 + 1 = -8 + 1 = -7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47806,"question":"La droite d'équation y = -3x + 2 passe-t-elle par le point (1, -1) ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Pour x = 1, y = -3*1 + 2 = -1. Le point (1, -1) appartient donc à la droite.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47807,"question":"Résolvez l'inéquation 2x - 7 \u003E 5.","option_a":"x \u003E 6","option_b":"x \u003C 6","option_c":"x \u003E 1","option_d":"x \u003C 1","option_e":"","option_f":"","bonne_reponse":"A","explication":"Ajoutez 7 : 2x \u003E 12. Divisez par 2 : x \u003E 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47808,"question":"Le périmètre d'un carré de côté 5 cm est-il égal à 20 cm ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le périmètre d'un carré est 4*côté = 4*5 = 20 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47809,"question":"Quelle est la forme développée de (x + 3)(x - 2) ?","option_a":"x² + x - 6","option_b":"x² - x - 6","option_c":"x² + 5x - 6","option_d":"x² - 5x + 6","option_e":"","option_f":"","bonne_reponse":"B","explication":"Développez : (x + 3)(x - 2) = x² - 2x + 3x - 6 = x² + x - 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":47810,"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, car elles ne se coupent jamais.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]