Bir noma’lumli tengsizliklar sistemalari. Sonli oraliqlar — 8-sinf Algebra test savollari

1.{5x − 1 > 3(x + 1); 2(x + 4) > x + 5} tengsizliklar sistemasini yeching.

• A)x > 2
• B)x > −3
• C)x > 2 va x > −3 kesishmasi bo‘sh to‘plam
• D)x < 2

2.{2x − 1 ≥ 3x; 5(x − 1) ≤ 8} tengsizliklar sistemasini yeching.

• A)x ≤ −1
• B)x ≥ −1
• C)$x\le \frac{13}{5}$
• D)bo‘sh to‘plam

3.{4x > 2000; 5x ≤ 4000} tengsizliklar sistemasining yechimini toping.

• A)500 < x ≤ 800
• B)500 ≤ x < 800
• C)x > 500
• D)x ≤ 800

4.(−2; 3) interval qanday tengsizlikka mos keladi?

• A)−2 < x < 3
• B)−2 ≤ x ≤ 3
• C)−2 ≤ x < 3
• D)−2 < x ≤ 3

5.[−1; 2) yarimintervalga mos tengsizlikni ko‘rsating.

• A)−1 ≤ x < 2
• B)−1 < x ≤ 2
• C)−1 < x < 2
• D)−1 ≤ x ≤ 2

6.(4; 7] yarimintervalga mos tengsizlikni ko‘rsating.

• A)4 < x ≤ 7
• B)4 ≤ x < 7
• C)4 ≤ x ≤ 7
• D)4 < x < 7

7.−2 ≤ x ≤ 3 tengsizlikka mos kesma qanday belgilanadi?

• A)[−2; 3]
• B)(−2; 3)
• C)[−2; 3)
• D)(−2; 3]

8.2 < x < 7 tengsizlikka mos sonli oraliq qanday nomlanadi?

• A)interval
• B)kesma
• C)yariminterval
• D)nur

9.a ≤ x ≤ b (a < b) tengsizlikni qanoatlantiruvchi x sonlar to‘plami qanday nomlanadi?

• A)kesma
• B)interval
• C)yariminterval
• D)nuqta

10.{3(x + 1) > 5; 4(x − 1) > x − 2} tengsizliklar sistemasini yeching.

• A)$x>\frac{2}{3}$
• B)x > 2
• C)$x<\frac{2}{3}$
• D)x < 2