157.                       Tasdiqni tengsizlik ko`rinishida yozing:

1) x va 17 sonlarining yig`indisi 18 dan katta;

2) 13 va x sonlarining ayirmasi 2 dan kichik;

3) 17 va x sonlarining ko`paytmasi 3 dan kichik emas;

4) x va –3 sonlari yig`indisining ikkilangani 2 dan katta emas;

5) x va 3 sonlari yig`indisining yarmi ularning ko`paytmasidan katta emas;

6) x va –4 sonlari ko`paytmasining ikkilangani ular ayirmasidan kichik emas.

158.                       10, , 0, 1 sonlaridan qaysilari tengsizlikning yechimi bo`ladi:

1) 3x + 4 > 2;                                           2) 3x + 4 ≤ x;

3)                                4) ?

159.                       y ning qanday qiymatlarida tengsizlik o`rinli bo`ladi:

1)  –2y > 0;                           2) –3y < 0;                     3) y² + 1 ≥ 0;

4) 2y² + 3 ≤ 0;                       5) (y – 1)² ≤ 0;                         6) (y + 2)² ≥0

160.                       27-rasmdagi y = kx + b chiziqli funksiyaning grafigi tasvirlangan, y

1)  x ≥ 0;                      2) x < 0;               3) x > –5;              4) x ≤ –5

bo`lganda qanday qiymatlar qabul qilishini tengsizlik yordamida yozing.

161.                       28-rasmda y = kx + b chiziqli funksiyaning grafigi tasvirlangan. x ning qanday qiymatlarida y funksiyaning qiymatlari: 1) musbat; 2) nomanfiy; 3) manfiy; 4) –4 dan kichik; 5) –4 dan kichikmas; 6) –4 dan katta bo`lishini tengsizlik yordamida yozing.

162.                       Funksiyaning grafigini yasang va grafik bo`yicha x ning qanday qiymatlarida funksiya musbat, manfiy, nolga teng, 1 dan katta, 1 dan kichik qiymatlar qabul qilishini toping:

1) y = 2x + 4;               2) y = 3x – 9;

3) y = –2x – 8;             4) y = –3x + 6;