1. parabola uchining koordinatalarini toping. A) (0; 4) B) ( 4; 2) C)

9-SINF TEST

1. parabola uchining koordinatalarini toping.

A) (0; 4) B) ( 4; 2) C) ( 2; -4) D) ( –4; 2)

2. parabola qaysi choraklarda joylashgan?

A) I, II, III; B) II, III, IV; C)I, III, IV; D)I,II,III,IV;

3. y (x) = x² - 5x +6 funksiyaga tegishli nuqtani toping.

a) ( 3; 0 ) b) ( -1; 1 ) c) ( 3; 27 ) d) ( 2; -10 )

4. . (x-6)(x+7) < 0 tengsizlikni yeching?

a) x > 6 b) x < - 7 c) -7 < x < 6 d) a,b

5.

A) B) C) D)

6. Teng yonli uchburchakning perimetri 42 sm ga teng. Yon tomoni asosining qismini tashkil qiladi. Shu uchburchakning asosi yon tomonidan necha sm uzun?

a) 7,5 sm b) 6,5 sm c) 6 sm d) 7sm

7. Perimetrlari 39 va 156 bo’lgan ko’pburchaklarning o’xshashlik koeffitsiyentini toping?

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

8. Katetlari 3 m va 7 m bo’lgan to’g’ri burchakli uchburchakka o’xshash bo’lgan uchburchakning bir kateti 12 m bo’lsa, ikkinchi katetini toping?

a) 12 m b) 21 m с) 28 m d) 14 m.

9. . a ning shunday qiymatini topingki, y = a parabola bilan y = 5x + 1 to’g’ri chiziqning kesishish nuqtalaridan birining abssissasi x = 1 bo’lsin.

a) a = 6 b) a = - 6 c) a = 4 d) a = -4 e) a = 7

10. Parabolaning koordinata o’qlari bilan kesishish nuqtalarining koordinatalarini toping.

a) ( -1;3 ) b)( 3;1 ) c) ( 1;3 ) d) ( 0;4 ) e) ( 4;0 )

11. Yuzasi 6,25π bo`lgan doira aylanasini uzunligini aniqlang

A) 5 π B) 2,25 π C)5,25 π D) 5,5 π

12. y = 6 – 5x + 1 parabolaning koordinata o’qlari bilan kesishish nuqtalarining koordinatalarini toping.

A) (1/3; 0), (1/2; 0), (0; 1) B) (-1/3; 0), (-1/2; 0), (1; 0)

C) (0;1/3), (0; 1/2), (0; 1) D) (1/3; 0), (-1/2; 0), (0; -1)

E) to’g’ri javob berilmagan

13. y = - 5 + 4x +1 parabola uchining koordinatalarini toping.

A) (2/5; 9/5) B) (-2/5; 9/5) C) (-9/5; 2/5) D) (2; 9) E) (9; 5)

14Koordinatalar boshidan y=x²-4x+3 parabolaning simmetriya o’qigacha bo’lgan masofani toping.

A) 1 B) 1,5 C) 2 D)2,5

15.Ikki musbat sonning yig’indisi 160 ga teng. Agar su sonlar kublarining yig’indisi eng kichik bo’lsa, shu sonlarni toping.

A)95; 65 B)155; 5 C)75; 85; D)80; 80

16. funksiyaning eng kichik qiymatini toping.

A) –1 B) 1 C) 7 D) –8

17.

A) –2 B)–2 C) –2 ; D) –2

18. a ning qanday qiymatida tengsizlik x ning barcha qiymatlarida o’rinli

A) B C) D)

19.Funksiyaning aniqlanish sohasini toping:

A) B) C) D)

20. Agar (-1;2) nuqta y = kx² +3x – 4 parabolaga tegishli bo`lsa, k ning qiymatini toping

A) –1 B) 1 C) 6 D) 9

21.funksiyaning qaysilari toq funksiya?

1) 2) 3) 4)

A)1, 2 B)2, 3 C)3, 4 D)1, 4

22.parallelogramning ikki tomoni nisbati 3:7 ga, uning perimetri esa 18 sm ga teng. Shu parallelogramning kichik tomonini toping.

A)3,4 sm B) 2,7sm; C)5,4 sm; D)4,5 sm;

23.quyidagi ta’riflardan qaysi biri to’g’ri?

A)ikkita uchburchakning burchaklari mos ravishda teng bo’lsa, ular o’xshash deyiladi.

B)ikkita uchburchakning tomonlari mos ravishda teng, bo’lsa ular o’xshash deyiladi.

C)ikkita uchburchakning mos tomonlari proporsional va mos burchaklari teng bo’lsa, ular o’xshash deyiladi.

D)ikkita uchburchakning mos tomonlari va mos burchaklari teng bo’lsa ular o’shash deyiladi.

24. Agar k>0 va b>0 bo’lsa, y=kx+b funksiyaning grafigi koordinatalar tekisligining qaysi choraklaridan o’tadi?

A) I; II B) I ; II va III C) I; III va IV D) I; II va IV

25.ABCD trapetsiyada BC va AD asoslari. BC:AD=3:4. Trapetsiya yuzasi 70sm² ga teng. ABC uchburchakning yuzasini toping.

A) 20 sm² B)30 sm² C)40 sm² D)50 sm²⁴

26. y= ax²+bx +c funksiya qachon eng kichik qiymat qabul qiladi?

A) a<0 B) a=0 C) a≤0 D)a>0

27. Berilgan uchburchak tomonlari 21 sm, 27 sm va 32 sm. Agar perimetri 120 sm bo`lgan uchburchak berilgan uchburchakka o`xshash bo`lsa, uning eng katta tomonini toping

A)48 sm B)42sm C)31,5 sm D)40,5 sm

28. Bo`yi 160 sm bo`lgan o`quvchi soyasining uzunligi 128 sm bo`lsa, bo`yi 210 sm bo`lgan basketbolchining soyasining uzunligini toping.

A)178 sm B)158 sm C)168 sm D)148 sm

29. Ikkita o`xshash ABC va DEF uchburchaklar berilgan. Agar S<sub>ABC</sub> = 75 m<sup>2</sup> , S<sub>DEF</sub> = 675 m<sup>2</sup> va ABC uchburchakning bir tomoni 5 m bo`lsa, DEF uchburchakning unga mos tomonini toping

A) 10 m B) 25 m C) 15 m D) 45 m

30. Teng yonli trapetsiyaning ikkita burchagi ayirmasi 40⁰ ga teng. uning burchaklarini toping

A) 110⁰; 70⁰; 110⁰; 70⁰ B) 115⁰; 75⁰; 115⁰; 75⁰ C) 135⁰; 45⁰; 135⁰; 45⁰ D) 140⁰; 40⁰; 140⁰; 40⁰

31.To’g’ri to’rtburchakning tomonlari 2dm va 3dm ga teng. Uning har bir tomoni bir xil sondagi detsimetrlarga shunday o’zgartrildiki, natijada to’g’ri to’rtburchakning yuzi 12 dm² dan ortiq bo’ldi. Har bir tomon qanday o’zgargan? Javob:____________________________'>Javob:____________________________

32.Agar parabolaning (–2; 5) nuqta orqali o’tishi va uning uchi (–1; 2) nuqtada bo’lishi ma’lum bo’lsa parabolaning tenglamasini yozing. Javob:_______________________________

33.Velosopid g’ildiragining diametri 64 sm. Ashraf velosopidda 100 m masofani bosib o’tdi. Bunda velosopidning har bir g’ildiragi necha marta to’liq aylandi?Javob:__________________

34.A nuqtadan ota 16 km/h tezlik bilan sharqqa, og’li esa 20 km/soat tezlik bilan velosopidda janubga qarab harakatlanmoqda. 4 soatdan keyin ular orasidagi masofa qancha bo’ladi.Javob:________________

9-SINF MATEMATIKA JAVOBLARI.

1.С 11.A 21.A 31.1 dm dan ko’proq

2.D 12.A 22.B 32.

3.A 13.A 23.C 33. 156 marta To’liq aylanadi

4.D 14.C 24.C 34. 102,5 km

5.A 15.D 25.B

6.C 16.A 26.D

7.C 17.A 27.A

8.D 18.A 28.C

9.A 19.B 29.C

10.C 20.D 30.A