Quiz Mathématiques — Première Année Secondaire : Algèbre, Fonctions et Géométrie

Question 1 sur 10 10:00

[{"id":68242,"question":"Quelle est la solution de l'équation 3x - 5 = 10 ?","option_a":"x = 5","option_b":"x = 15\/3","option_c":"x = 5\/3","option_d":"x = 10\/3","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 3x - 5 = 10, on ajoute 5 des deux côtés : 3x = 15, puis on divise par 3 : x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68243,"question":"La fonction f(x) = 2x + 1 est-elle croissante ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le coefficient directeur de la fonction affine f(x) = ax + b est a = 2. Comme a \u003E 0, la fonction est croissante.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68244,"question":"Quel est le résultat de √16 + √9 ?","option_a":"5","option_b":"7","option_c":"10","option_d":"15","option_e":"","option_f":"","bonne_reponse":"C","explication":"√16 = 4 et √9 = 3. Donc √16 + √9 = 4 + 3 = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68245,"question":"Dans un triangle rectangle, le théorème de Pythagore s'applique-t-il toujours ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le théorème de Pythagore s'applique uniquement aux triangles rectangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68246,"question":"Quelle est l'image de 2 par la fonction f(x) = x² - 3x + 2 ?","option_a":"0","option_b":"2","option_c":"4","option_d":"6","option_e":"","option_f":"","bonne_reponse":"B","explication":"f(2) = 2² - 3*2 + 2 = 4 - 6 + 2 = 0. L'image de 2 est donc 0.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68247,"question":"Un nombre réel est-il toujours rationnel ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Un nombre réel peut être rationnel (comme 1\/2) ou irrationnel (comme √2).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68248,"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 + 3 \u003E 7 → 2x \u003E 4 → x \u003E 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68249,"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":68250,"question":"Quelle est la forme développée de (x + 2)(x - 3) ?","option_a":"x² - x - 6","option_b":"x² + x - 6","option_c":"x² - 5x - 6","option_d":"x² - x + 6","option_e":"","option_f":"","bonne_reponse":"A","explication":"(x + 2)(x - 3) = x² - 3x + 2x - 6 = x² - x - 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":68251,"question":"La droite d'équation y = -2x + 4 est-elle parallèle à l'axe des abscisses ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Une droite parallèle à l'axe des abscisses a une équation de la forme y = constante. Ici, y = -2x + 4 n'est pas parallèle.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]