ni eng kichik qiymatini toping. A -6 b c d -7 3

1. Agar kamayuvchini 27ta va ayriluvchini 33ta ortirilsa ayirma qanday o’zgaradi?
A)6ta kamayadi B)60ta ortadi
C)10ta kamayadi D)6ta ortadi
2. ni eng kichik qiymatini toping.
A)-6 B)7 C)2 D)-7
3. Barcha uch xonali sonlar ichida 11ga qoldiqsiz bo’linadigonlari nechta?
A)79 B)90 C)81 D)82
4. ni ildizdan chiqaring.
A) B) C) D)3
5. ni qisqartiring.
A) B) C) D)
6. ifoda qanday qiymatlarni qabul qilishi mumkin?
A)0;4 B)3;6 C)2;3 D)0;2
7. tenglama ildizlari ko’paytimasini toping.
A) B)1 C)-2 D)-1
8. Ox o’qqa nisbatan y=4x-6 to’g’ri chiziqqa simmetrik bo’lgan to’g’ri chiziq tenglamasini toping.
A)y=4x+6 B)y=-4x+6
C)y=-4x-6 D)y=5x-6
9. tenglamani yeching.
A)-3 B)-1 C)28 D)-28
10. y:9=35:15 proporsiyaning noma’lum hadini toping.
A)-3 B)21 C)1 D)-21
11. c=1,777 va k=1,8111 ni taqqoslang.
A)ck C)c=k D)tjy
12. 45,90 va 180 sonlarining eng kichik umumiy karralisini yoping.
A)360 B)90 C)180 D)120
13. 77-66-33 ni hisoblang.
A)-26 B)-28 C)-38 D)-36
14. 700 ni kanonik yoyilmasini toping.
A) B)
C) D)
15. ni hisoblang.
A)30 B103 C)20 D)15
16. (1-0,973)+(2,5-1,114)-(1,137-0,883) ni hisoblang.
A)4,812 B)0,254
C)1,159 D)1,413
17. ni soddalashtiring.
A) B) C)1+b D)1-
18. C(3;-1,1) nuqtrani koordinata boshiga nisbatan simmet ko’chirilgandagi koordinatalarini ko’rsating.
A)(-3;1,1) B)(-3;-1,1)
C)(3;1,1) D)(3;-1,1)
19. ni soddalashtiring.
A) B) C)2ab D)9
20. bo’lsa ifodaning eng kichik qiymatini toping.
A) B) C)12 D)
21. n ning qanday qiymatida tenglamaning x₁ va x₂ ildizlari ostida 8x₁+6x₂=20 munosabat o’rinli bo’ladi?
A)-2 B)2 C)3,5 D)-3,5
22. tengsizlikni yeching.
A)(- ;-3)U(1;2) B)(1;2)U(2;
C)(- U(1;2)U(2; D) (- ;-3) U(2;
23. m ning qanday qiymatlarida +(3m-15)x-27=0 tenglamaning ildizlari qarama-qarshi sonlar bo’ladi?
A)0 B)-3;3 C)-5 D)5
24. tenglamani yeching.
A) B) C) D)
25. (ax+2y)(3x+by)=cx²+7xy+y² ifoda ayniyat bo’lsa c ni toping.
A)6 B)2 C)4 D)0
26. sistema nechta yechimga ega?
A)4 B)3 C)2 D)1
27. a va b ning qanday qiymatlarida ax-9y=4 va 4x-6y=b to’g’ri chiziqlar ustma-ust tushadi?
A) B)
C) D)
28. (1;2) va (2;-5) nuqtalardan o’tuvchi to’g’ri chiziq tenglamasini toping.
A)y=9x-7 B)y=-7x+9
C)y=-7x-9 D)y=-6x-8
29. Agar k<0, b>0 bo’lsa y=kx+b funksiya grafigi qaysi choraklarda joylashgan?
A)II,IV B)I,II,IV
C)II,III,V D)I,II,IV
30. f(x)=-3x+1,5 funksiyada f(x)=-4,5 bo’lsa x ning qiymatini toping.
A)-2 B)0,5 C)2 D)-0,2

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