Matematika. 8 sinf. Test savollari. I chorak

Matematika. 8 sinf. Test savollari. I - chorak

1. M(-3;7) nuqta qaysi koordinata burchagida yotibdi?

A) I B) II C) III D) IV
2. Funksiya s = 75t formula bilan berilgan. s(5) ni aniqlang.
A) 70 B) 80 C) 365 D) 375
3. Funksiya y = 3-5x formula bilan berilgan. y ning qiymati -19 ga teng bo`lishi uchun x ning qiymati qanday bo`lishi kerak ?.
A) B) 8 C) 4,4 D) 3,2
4. y = -1,5x funksiya grafigi qaysi koordinata burchaklarida joylashgan ?
A) I, III B) II, IV C) I, II, III D) II, III, IV
5. Chiziqli funksiyani toping.
A) y = 3x² +4x -1 B) y = C) y = D) y = x³ -5
6. y = - 4x +b funksiyaning grafigi A(1; -3) nuqtadan o`tishi ma’lum bo`lsa, b ning qiymatini toping.
A) 1 B) 2 C) 3 D) -2
7. Tog`ri chiziq A( 1;1) va B(2;-1) nuqtalardan o`tadi. Uning tenglamasi (formulasi) ni toping.
A) y = 2x – 3 B) y = 2x + 3 C) y = 3x-2 D) y = -2x + 3
8. y = 6x – 10 funksiyaning grafigi qaysi choraklarda yotadi ?
A) I, II, III B) I, III, IV C) I, III D) I, II, IV
9. y = kx – 4 funksiya grafigi (3;5) nuqtadan o`tadi. k ni toping.
A) 3 B) -3 C) 2 D) 7
10. y = 5x-12 funksiya grafigining koordinata o`qlari bilan kesishish nuqtalarini toping.
A) (-2,4; 0) va (0; -12) B) ( -2,4; 0) va (0; 12) C) (2,4; 0) va (0; -12) D) (- ; 0) U (0; -12)
11. Tenglamalar sistemasi berilgan: . x = 3, y = -2 sonlari juftligi uning yechimi ekanligi ma’lum, a va b ni toping.
A) a = 3, b = -2 B) a = -1, b = 5 C) a = 2, b = 6 D) a = 1, b = -5
12. Ikki sonning yig`indisi 37 ga teng, ularning ayirmasi esa 15 ga teng. Shu sonlarni toping.
A) 31 va 6 B) 21 va 16 C) 26 va 11 D) 24 va 9
13. To`g`ri to`rtburchakning perimetri 24 sm ga teng. qo`shni tomonlarining ayirmasi esa 2 smga teng. To`g`ri to`rtburchakning tomonlarini toping..
A) 7 sm, 4 sm B) 4 sm, 6 sm C) 8 sm, 6 sm D) 7 sm, 5 sm
14. Tenglamalar sistemasini yeching:
A) x = 3, y = 1 B) x = 3, y = -3 C) x = 5, y = -1 D) x = -1 , y = 5
15. Tenglamalar sistemasini yeching:
A) x = 3, y = 1 B) x = 1, y = -3 C) x = 3, y = -1 D) x = -1 , y = 3
16. Tenglamalar sistemasini yeching:
A) x = 2, y = 1 B) x = 2, y = -3 C) x = 2, y = -2 D) x = -2 , y = 2
17. (x; y) sonlar juftligi sistemaning yechimi bo`lsa, y-x ni toping.
A) 0 B) 2 C) -2 D) -1
18. Qavariq 9 burchakning diagonallari sonini toping.
A) 7 B) 9 C) 16 D) 27
19. Har bir ichki burchagi 135⁰ ga teng bo`lgan qavariq ko`pburchakning nechta tomoni bor ?
A) 7 B) 9 C) 8 D) 6
20. Tashqi burchagining har biri 30⁰ ga teng bo`lgan qavariq ko`pburchakning nechta tomoni bor ?
A) 9 B) 10 C) 12 D) 18
21. Teng yonli trapetsiyaning katta tomoni 6,8 sm ga, yon tomoni 3 sm ga va ular orasidagi burchagi 60⁰ ga teng. Uning kichik asosini toping.
A) 2,4 sm B) 3,4 sm C) 3,8 sm D) 4,5 sm
22. Burchaklaridan biri 60⁰, kichik diagonalining uzunligi 6 sm bo`lgan romb perimetrini toping.
A) 42 sm B) 64 sm C) 41 sm D) 24 sm
23. Ikkita burchagining yig`indisi 110<sup>0</sup> ga teng bo`lgan parallelogrammning katta burchagini toping.
A) 140⁰ B) 135⁰ C) 125⁰ D) 110⁰
24. Uchburchak tomonlarining nisbatlari 6 : 8 : 10 kabi, perimetri 240 sm. Uchlari berilgan uchburchak tomonlarining o`rtalarida bo`lgan uchburchakning perimetrini toping.
A) 128 sm B) 164 sm C) 120 sm D) 96 sm
25. Trapetsiyaning o`rta chizig`i 14 sm ga, asoslaridan biri esa 9 sm ga teng. Trapetsiyaning ikkinchi asosi nimaga teng ?.
A) 16 sm B) 19 sm C) 21 sm D) 23 sm

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