Quiz Révision Maths 3ème Année Secondaire — 1er Trimestre

Question 1 sur 10 10:00

[{"id":53771,"question":"Quelle est la solution de l'équation 3x - 5 = 2x + 7 ?","option_a":"x = 12","option_b":"x = -12","option_c":"x = 2","option_d":"x = 5","option_e":"","option_f":"","bonne_reponse":"A","explication":"On isole x : 3x - 2x = 7 + 5 → x = 12.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53772,"question":"La fonction f(x) = 2x + 3 est 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 f(x) = ax + b, ici a=2 et b=3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53773,"question":"Quel est le coefficient directeur de la droite d'équation y = -4x + 1 ?","option_a":"-4","option_b":"1","option_c":"4","option_d":"-1","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le coefficient directeur est le nombre devant x, ici -4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53774,"question":"La moyenne d'une série de 5 notes : 10, 12, 14, 8, 16 est :","option_a":"12","option_b":"14","option_c":"10","option_d":"16","option_e":"","option_f":"","bonne_reponse":"B","explication":"Moyenne = (10+12+14+8+16)\/5 = 60\/5 = 12.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53775,"question":"Dans un triangle rectangle, le carré de l'hypoténuse est égal à la somme des carrés des deux autres côtés.","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.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53776,"question":"Quelle est la solution de l'inéquation 2x + 3 \u003E 7 ?","option_a":"x \u003E 2","option_b":"x \u003C 2","option_c":"x \u003E -2","option_d":"x \u003C -2","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":53777,"question":"Un dé cubique non truqué a 6 faces. Quelle est la probabilité d'obtenir un nombre pair ?","option_a":"1\/2","option_b":"1\/3","option_c":"1\/6","option_d":"2\/3","option_e":"","option_f":"","bonne_reponse":"A","explication":"Nombres pairs : 2,4,6 → 3 cas favorables sur 6 possibles → 3\/6 = 1\/2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53778,"question":"La médiane d'une série de 7 notes : 5, 7, 8, 9, 10, 12, 15 est :","option_a":"8","option_b":"9","option_c":"10","option_d":"12","option_e":"","option_f":"","bonne_reponse":"B","explication":"La médiane est la 4ème valeur dans l'ordre croissant : 9.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53779,"question":"Si deux droites sont parallèles, alors leurs coefficients directeurs sont 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.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":53780,"question":"Quelle est la forme factorisée de x² - 9 ?","option_a":"(x-3)(x+3)","option_b":"(x-9)(x+1)","option_c":"(x-3)²","option_d":"(x+3)²","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une différence de carrés : x² - 3² = (x-3)(x+3).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]