8-sinf matematika fanidan test savollari I variant

8-sinf matematika fanidan test savollari I variant

1.y=-2x+b funksiya grafigi (-2;3) nuqtadan o’tadi. b ni toping.

a) 1 b)-1 c)2 d)4

2. Tehglamalar sistemasini algebraik qo’shish usuli bilan yeching.

a) (3;2) b)(2;3) c)(4;5) d)(-3;2)

3.Ikki sonning yig’indisi 51 ga teng , ularning ayirmasi esa 21 ga teng. Shu onlarni toping.

a)15;36) b)(36;15) c)(20;10) d)(-36;-15)

4.Hisoblang.

a)3 b)-2 c)5 d)4

5. Funksiya y=x²+x+1 formula bilan berilgan . y(0) ni toping .

a) 1 b)-1 c)2 d)4

6. y=3x-1 chizqli funksiya berilgan . y(1) ni toping.

a)4 b)2 c)5 d)7

7. y=kx+2 funksiya grafigi (1;1) nuqtadan o’tadi. b ni toping.

a) -1 b)1 c)2 d)-2

8. Agar v=60 bo’lsa , S= ifodaning son qiymatini toping.

a) 20 b)30 c)40 d)200

9. Har bir to’g’ri jvob uchun :ona tili va adabiyotdan n ball , matematikadan k ball ingliz tilidan m ball qo’yildi. Nodira ona tili va adabiyotdan c ta , matematikadan a ta , ingliz tilidan b ta savolga to’g’ri javob berdi.

1) Nodira to’plagan jami ballni hisoblash uchun ifoda tuzing.

2) agar a=35. b= 34. c=36 , k=3.1 m=2.1, n=1.1 bo’lsa u jami qancha ball to’plagan

a) 200 b)219.5 c)204.5 d)220

10. Ko’paytuvchilarga ajrating . 5a²-15a⁴+10a⁶ =

a) 5a²(1-3a² +2 a⁴ ) b) a²(5-3 a²=+2a⁴) c) a²(5-15a² +10 a⁴) d)(5a-3)(5a+3)

11. Tehglamalar sistemasini algebraik qo’shish usuli bilan yeching.

a) (4;3) b)(3;4) c)(5;7) d)(-4;-3)

12.To’g’ri to’rtburchakning peremetri 96 sm ga teng . Agar to’g’ri to’rtburchakning tomonlari 1:3 nisbatda bo’lsa , uning tomonlarini toping .

a) 12 sm, 36 sm b)36sm, 12 sm c)48 sm, 40sm d)10sm, 20 sm

13. Trapetsiyaning asosidagi burchaklar 110⁰ va 99⁰ ga teng.Shu trapetsiyaning qolgan burchaklarini toping.

a) 70 ⁰, 80⁰ b) 80⁰, 70 ⁰ c) 99 ⁰, 110⁰ d) 90 ⁰, 70⁰

14. Ikkita tomoni parallel qolgan ikkita tomoni parallel bo’lmagan to’rtburchak … deb aytiladi.

a) trapetsiya b) kvadtar c) parallelogram d) kub

15. Qarama-qarshi tomonlari o’zaro parallel bo’lgan to’rtburchak … deb aytiladi.

a) trapetsiya b) kvadtar c) parallelogram d) kub

16. Parallelogramning qarama –qarshi tmonlari ….

a) o’xshash b) teng c) bilmadim d) egri

17. To’g’ri to’rtburchakning dioganallari o’zaro ….

a) o’xshash b) teng c) bilmadim d) egri

18. To’g’ri to’rtburchakning peremetri 54 sm ga, tomonlaridan biri esa ikkinchisidan 3 sm uzun . Qo’hni tomonlar uzunliklarini toping .

a) 12 sm, 36 sm b)36sm, 12 sm c)48 sm, 40sm d) 12 sm, 15sm

19. Uchburchakning tomonlari 4sm, 6 sm, 8 sm, ga teng.Shu uchburchakning o’rta chiziqlarini toping.

a) 1sm,3sm,4sm b) 2sm,2sm,4sm c) 2sm,3sm,4sm d) 1sm,2sm,3sm

20. Kvadratning peremetri 30 sm gat eng . Uning tomonini toping.

a) 3,6 sm b)7,5 sm c)8,5 sm d) 1,5sm

21. Tengsizlikni yeching. X+2

a) x b) x c) x d) x-13

22. Tengsizlikni yeching. -7x

a) x-8 b) x c) x d) x<49

23. x ning qanday qiymatlarida ifoda musbat bo’lishini aniqlang. 2(x=3)+3x>0

a) x<1.2 b) x>-1.2 c) x .2 d) x<-6

24. Berilgan sonli oraliqqa tegishli x sonlar to’plamini qo’sh tengsizlik ko’rinishda yozing.

[-4;0]

a) -4x va x<0 b) x>0 va x -4 c)-4 x d)0 x-4

25. Berilgan sonli oraliqqa tegishli x sonlar to’plamini qo’sh tengsizlik ko’rinishda yozing.(0;3)

a) 0< x<3 b)0 x c) x>0 va x<3 d) x<0 va x<3

1. 
   b
   
2. 
   a
   
3. 
   b
   
4. 
   d
   
5. 
   c
   
6. 
   b
   
7. 
   a
   
8. 
   b
   
9. 
   b
   
10. 
    a
    
11. 
    a
    
12. 
    a
    
13. 
    a
    
14. 
    a
    
15. 
    c
    
16. 
    b
    
17. 
    b
    
18. 
    d
    
19. 
    c
    
20. 
    b
    
21. 
    b
    
22. 
    a
    
23. 
    b
    
24. 
    c
    
25. 
    a