Y = 4,5 x funksiyaning grafigi qaysi koordinata burchaklarida joylashgan?

Matematika.

1. 
   y = - 4,5 x funksiyaning grafigi qaysi koordinata burchaklarida joylashgan?
   

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

2.. y = -3x + b funksiyaning grafigi M (-2; 4) nuqtadan o`tishi ma’lum bo`lsa, b ning qiymatini toping.

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

3. y = kx + b funksiya grafigi A (0; 3) va B (1;2) nuqtalardan o`tadi. k va b ni toping.

A) k = -1, b = 1 B) k = 2, b = -4

C) k = -1, b = 3 D) k =1, b = 3

4. A ٠ X = B tenglama A = 0 , B = 0 bo`lganda nechta yechimga ega ?

A) 1 B) 2 C) yechimga ega emas

D) cheksiz ko`p yechimga ega.

5. Ikki sonning yig`indisi 35 ga teng, ularning ayirmasi esa 1 ga teng. Shu sonlarning ko`paytmasini toping.

A) 306 B) 248 C) 196 D) 66

6. Agar -2< a <-1 va -3 < b < -2,5 bo`lsa, a – b ayirma qaysi sonlar orasida bo`ladi?

A) (1;1,5) B) (-1,5;-1) C) (-1;1,5)D) (0,5;2)

7. 1 ≤ ≤ 4 tengsizlikning tub sonlardan iborat nechta yechimi bor ?

A) 3 B) 4 C) 5 D) 6

8. tengsizliklar sistemasining eng katta va eng kichik butun yechimlri yig`indisini toping.

A) 15 B) 16 C) 17 D) 18

9. Quyidagi 7< x < 105 tengsizlikni qanoatlantiruvchi va bo`luvchisi 13 ga teng bo`lgan nechta natural son mavjud ?

A) 8 B) 9 C) 10 D) 11

10. Tengsizliklar sistemasini yeching:

A) [-3;5) B) [-6;6) C) (2;4] D)

11. : (-5) = -2 tenglama ildizlarining ko`paytmasini toping.

A) 25 B) 40 C) -36 D) -100

12. b ning qanday qiymatlarida

= b+17 tenglik o`rinli bo`ladi ?

A) b = -17 B) b ≤ -17 C) b ≥ -17D) xR

13. Tengsizlikni qanoatlantiradigan natural sonlarning eng kattasi topilsin: < 5

A) 2 B) 3 C) 4 D) 5

14. Tengsizlikni yeching:

A) (-2;3) B) (-2;∞) C) (-∞;-2)U (0; ∞) D) (-∞;0) U (0; ∞)

15. Tengsizlikni yeching:

A) Yechimga ega emas B) [-1;3] C) [1;3] D) (-∞;-1] U [3; ∞)

16. Agar to`g`ri to`rtburchakning tomonlari 4 marta orttirilsa, uning yuzi necha marta ortadi?

A) 4 B) 8 C) 16 D) 32

17. Tog`ri to`rtburchakning yuzi 400 ga, tomonlarining nisbati 4 : 1 ga teng. Shu to`g`ri to`rtburchakning perimetrini toping.

A) 100 B) 200 C) 120 D) 80

18. Tog`ri to`rtburchakning uzunligi 25 % ga ortttirildi. Uning yuzi o`zgarmasligi uchun enini necha protsentga kamaytirish kerak ?

19. Asoslari 8 va 12 ga teng bo`lgan teng yonli trapetsiyaning diagonallari o`zaro perpendikulyar. Trapetsiyaning yuzini toping.

20. Trapetsiyaning yuzi 30 ga , balandligi 6 ga teng bo`lsa, uning o`rta chizig`i qanchaga teng bo`ladi ?

21. Yuzi 144 sm², balandliklari 8 sm va 12 sm bo`lgan parallelogrammning perimetrini toping.

22. ABCD parallelogrammning AC diagonaliga BO perpendikulyar tushirilgan. AO = 8, OC = 6 va BO = 4 bo`lsa, parallelogrammning yuzini toping.

23. Romning diagonallari 6 va 8 ga teng. Uning yuzini toping.

24. AC va BD – ABCD to`rtburchakning diagonallari, O – ularning kesishish nuqtasi. S_AOD = 12, S_BOC = 8, S_AOB =6. S_COD ni toping.

25. ABC uchburchakda C burchak 135⁰ ,

AC = 6 dm, BD balandlik 2 dm ga teng. ABD uchburchakning yuzini toping.

Yozma ish

1. 
   Uchburchakning a va b tomonlariga o`tkazilgan balandlik h_a va h_b bilan belgilangan. ekanini isbot qiling.
   
2. 
   Yuzi 36 sm² ga teng bo`lgan ABC uchburchakning AC tomonida D nuqta olingan, unda AD: DC = 1: 5. ABD uchburchakning yuzini toping.
   
3. 
   Ko`paytuvchilarga ajrating: x⁵ + x + 1 .
   
4. 
   Soddalashtiring: .
   
5. 
   a-2b; 4; a+3b; 24 sonlar proporsiyaning ketma-ket hadlari bo`lsa, ifodaning qiymatini toping.