8- sinflar uchun matematikadan test savollari
1.
y = -2x + b funksiya grafigi M(-1;7) nuqtadan o`tadi. b ni toping.
A. 9
B. 5
C. -5
D. 3
2. y = kx +4 funksiya grafigi M(1;1) nuqtadan o`tadi. k ni toping.
A. -3
B. 3
C. -2
D.
3. Funksiyalardan qaysinisining grafigi M(1;1), N(1/3;3) nuqtalardan o`tadi?
1) y = 2x - 1
2) y = -6x + 5
3) y = -3x +4
4) y = 3x – 2
A. 1
B. 2
C. 4
D. 3
4. Tengsizliklarni qo`shing.
3x + y<2x + 1 va 3y – 2x<14 – 2a
A. x +4y<2x -2a +15
B. x – 2y > 3x -2ª
C. 3x -2ª
D. 5x
4. Tengsizlikni yeching:
(2x + 1)(4x2 – 2x +1) 8x3  -2(x +3)
A. x  3,5
B. x  -3,5
C. x  4
D. x  5
5. Tengsizliklar sistemasini yeching.
3x +3  2x +1
3x -2  4x +2
A. (-4;2]
B. {-4;-2)
C. (-4;2]
D. [-4;-2]
2
6. Uchburchakning yuzi 30,375 sm ga teng. Uchburchakning asosi balandligidan 3
marta katta bo`lsa, uning asosi va balandligini toping.
A. 9; 3
B. 4,5; 1,5
C. 6; 2
D. 12; 4
2
7. Yuzi 144 sm balandliklari 8sm va 12 sm bo`lgan parallelogrammning perimetrini
toping.
A. 60sm
B. 90sm
C. 76sm
D. 52sm
8. To`g`ri burchakli trapetsiyaning katta diogonali 13smga, katta asosi esa 12sm gat eng.
Agar trapetsiyaning kichik asosi 8 sm gat eng bo`lsa, uning yuzini toping.
A. 50sm2
B. 45sm2
C. 75sm2
D. 80sm2
9. Tengsizliklar sistemasini yeching:
5(x+1)-x>2x+2
4(x+1)-2<2(2x+1)-x
A. [1,5;0]
B. 3< x<5
C. (-1,5;0)
D. [-1,5;1]
10. x ning quyidagi tengsizlik bajariladigan barcha butun qiymatlarini toping:
5x  2 <8
A. 2,3,4
B. -1,0
C. -2,-1
D. -1;0;1
11. Tengsizlikni yeching:
3  5 x 7 x  3 3x  5
>
4
6
12
A. x>-3
B. x<-2/15
C. x < -1/16
x> -8
12. Tomonlari 39sm, 42sm,45sm bo`lgan uchburchakning yuzini toping.
A. 560sm2
B. 890sm2
C. 656sm2
D. 756sm2
13. Trapetsiyaning asoslari 14sm va 21sm ga, balandligi esa 8sm gat eng. Shu
trapetsiyaning yuzini toping.
A. 120sm2
B. 140sm2
C. 70sm2
D. 90sm2
14.Ifodaning qiymatini toping: 3 10  2a ; bunda a = -3
A. 12
B. 16
C. 4
D. 20
15.a ning qanday qiymatlarida quyidagi ifoda ma`noga ega: 3  a ;
A. a  3
B. a  4
C. a  -3
D. yechimi yo`q
16. Cheksiz o`nli davriy kasrni oddiy kasr shaklida yozing: 4,1(25)
A. 400/99
B. 3067/999
C. 201/90
D. 4084/990
17. Tenglamani yeching: ( x  7) 2 = x – 7
A. x < 6
B. x  7
C. x > 7
D. x  -7
18. Teng yonli uchburchakning tomonlari 6 sm, 5sm va 5 sm gat eng. Shu
uchburchakning yuzini toping.
A. 16 sm 2
B. 22sm2
C. 30sm2
D. 12sm2
19.Teng yonli trapetsiyaning diagonali 25sm ga, balandligi esa 15 sm gat eng.
Trapetsiyaning yuzini toping.
20. Tengsizliklar sistemasini yeching:
x3
x2

2
3
x4
x5

5
4
21. Teng tomonli uchburchakning yusini topish formulasini yozing:
22. To’g’ri burchakli uchburchakning a va b kateti berilgan c gipotenuzasini toping.
a = 0,5, b = 1,2
23. Hisoblang 3132  3122 
24. Amalarni bajaring: ( 8  2 ) 2 =
25. Ko`paytuvchini ildiz belgisi ostigas kiriting: 2
1 1

28 
2 2
S
J
19.
20.
21.
22.
23.
24.
25.
1
2
3
4
5
B
A
A
B
D
Javob: 300sm2 ;
Javob: -12  x  9;
a2 3
;
Javob: S =
4
Javob: 1,3;
Javob: 25;
Javob: 18;
Javob:
2 7;
6
B
7
A
Javoblar:
8
9 10
A
C
D
11
C
12
D
13
B
14
A
15
C
16
D
17
B
18
D