Mаtеmаtikа 9-sinf 1- variant 1-chorak

1- chorak Mаtеmаtikа 9-sinf 2- variant

26.Funksiyalarning qaysi biri kvadrat funksiya emas?а) х + 2х² ; b) у = х² – 1; c) у = х² ; d) у =х.

27. у = 2х² + 12х + 15 parabola uchining koordinatalarini toping.а) (-6;15); b) (-3;-6); c) (3;69); d) (-3;-3).

28. у = 6х – 5х² funksiyaning nollarini toping.

29. у = -х² funksiya qaysi oraliqda kamayadi ?

30. у = х² - 6х + 8 funksiyaning qiymatlari to‘plamini toping? а) ø 31.Quyidagi sonlardan qaysilari 3х² – х - 2 > 0 tengsizlikning yechimi bo‘lmaydi? c) 0; d)1.

32.Tengsizlikni yeching: а) ø

33.Tengsizlikni yeching: -4х² + 5х - 1 ≥ 0.

34.Tengsizlikni qanoatlantiruvchi х ning eng kichik butun musbat qiymatlarini toping,

bunda, а) 3; b) 2; c) 4; d)1.

35 . Ifodaning qiymatini toping:

36. Ifodani soddalashtiring: а) а^-2; b)а^-1; c) а¹; d) а² .

37. Hisoblang: а)-82; b) –84; c) -86; d) –88.

38. Ifodaning qiymatini toping: а) -9,8; b) -8,9; c)-9,9; d) 9,9.

39 . Tengsizliklar sistemasini yeching:

a)(-2; -2) b) (2; -2) v) (-1; 1) g)(1; -1)

40. Grafigi rasmdagi to'g'ri chiziq bilan tasvirlangan funksiyani formula bilan yozing.

A.y=-2x B. y=2x C. y=0,5x D. y=4x

41. Quyidagi shaklda qaysi kvadrat tengsizlik yechimi aks ettirilgan?

A) x² -4x+3>0 B) x² -4x+4< 0 C) x² +3x-4>0 D) x² +3x+4>0

42.у= va у = 6х funksiyaning grafiklarini yasamasdan grafiklarning kesishgan nuqtalarining koordinatalarini toping а) (3;2),(-3;-2); b) (3;2),(-3;2); c) (3;2),(3;-2); d) (2;1),(-2;-1).
43.АBC va А₁ B₁ C₁ uchburchaklar o‘xshash bo‘lib, АB kesma 2sm, BC kesma 3sm va

А₁ B₁ kesma 6sm ga teng. B₁ C₁ ni toping_. а) 2sm; b) 6sm; s) 4sm; d) 3sm.

44. Ikki o‘xshash uchburchaklardan birining tomonlari 7sm, 12sm, 16sm, ikkinchisining tomonlari esa 40sm, 30sm va х sm bo‘lsa, х ni toping. а) 18sm; b) 20sm; с) 24sm; d) 18,5 sm.

45..CDЕ uchburchakda ЕC = 26 sm, MNCE, bunda MCD, NED.

Agar CM = 8sm va MN = 20sm bo‘lsa CD ni toping а) 24sm ; b) 27sm; с) sm; d) 24sm.

46. Uchburchak tomonlari 5, 6, 8 sonlariga proporsional bo‘lib, unda o‘xshash uchburchakning perimetri 96 sm bo‘lsa, shu uchburchakning tomonlarini aniqlang?

а) 25sm, 29sm; 40 sm; b) 15sm; 40sm; 40sm; v) 25sm; 30sm; 40sm; g) 35sm, 20sm. 40sm.
47. Rasmdagi ma’lumot asosida xni toping

A) 4.5 B) 10 C) 3 D) 4

48. Rasmdagi ma’lumot asosida xni toping

A) 8 B) 6 C) 10 D) 6

49.O‘xshash uchburchaklarning perimetrlari nisbati nimaga teng?

A) Mos tomonlar nisbatining kvadratiga; B) O‘xshashlik koeffitsiyentiga;

D) O‘xshashlik koeffitsiyentining kvadratiga; E) Yuzlari nisbatiga.

50.Tengsizliklar sistemasini yeching