Algebra viii-sinf. I-chorak test. A-variant

Algebra VIII-sinf.I-chorak test.D-variant

1. 
   Quyidagi nuqtalarning qaysilari y=-2x+5 funksiya grafigiga tegishli emas: 1)(1;-3); 2) (0;5); 3) (2;3); 4) (3;-1); 5) (-1;6); 6) (-2;9) ?
   

#1 2,3,4 #2 4,5,6 #3 1,2,4 #4 1,3,5 #5 1,3,6

2. 
   y=kx+b funksiya grafigi M(0;-1) ,N(1;-5) nuqtalardan o’tadi.k va b ni toping. #1 k=2,b=3 #2 k=3, b=2 #3 k=-4, b=-1 #4 k=2, b= -3 #5 k=-3, b= -2
   
3. 
   y=-5x+3 funksiya grafigida koordinatalari yig’indisi 15ga teng bo’lgan nuqtani toping. #1 (3;15) #2 (-3;18) #3 (-4;19) #4 (-2;17) #5 unday nuqta yo’q
   
4. 
   y=-3x-5 funksiya grafigining koordinata o’qlari bilan kesishish nuqtalari koordinatalarini toping: #1(0;-5) va(-5/3;0) #2 (0;-5) va (-3/5;0) #3 (0;5) va (3/5;0) #4 (0;5) va (5/3;0) #5 to’g’ri javob yo’q
   

5 .  3x  4

 2 y  1

#1 x=1, y=1/3 #2 x=1/2, y=-1/3 #3 x=1, y=1 #4 x=-1/8, y=-1 #5 to’g’ri javob yo’q

4x  3y

6. 
   x;y) sonlar juftligi
   

  2

4

sistemaning yechimi bo’lsa,x²-y² ni toping

#1 0 #2 1 #3 2 #4 -1 #5 4

_ 4x  3y _{ 0} 6

6. 
   Qaysi son qavsdan tashqariga chiqadi? 81*17-15*81=? #1 17#2 81#3 15#4 17 va 15#5 15 va 81
   
7. 
   Amallarni bajaring: (-a)³ *(2a)=?
   

#1 -3a#2 -2a⁴ #3 -4a³ #4 -2a² #5 -3a²

6. 
   a² –b² nimaga teng?
   

#1 (a-b)(a+b)#2 a² +2ab+b²#3 a²-2ab+b²#4 (a+b)²a#5 a +ab+b 10. (1+a)(1-a) =?

#1 1+a² #2 1-a² #3 1² +a² #4 1+a #5 1-a

1

11. 
    Ifodani soddalashtiring va uning son qiymatlarini toping. (4c+
    

4

#1 8 #2 9#3 6#4 7#5 15

11. 
    Tenglamani yeching: 8(x+2)-6=7-(5-8x)
    

#1 -2 #2 0,5 #3 1,6 #4 ildizga ega emas #5 5/8

11. 
    Gorizontal Ox to’g’ri chiziq … o’qi deyiladi.
    

x)(4c 


¹ x)  (4c 

4

¹ x)²

4

#1 koordinatalar #2 simmetriya #3 abssissalar #4 ordinatalar #5 markaziy

11. 
    x>0, y>0 koordinatalar sistemasida nimani bildiradi?
    

#1 IV-chorak #2 III-chorak #3 II-chorak #4 I-chorak #5 koordinatalar boshi

11. 
    A(0;y) to’g’ri chiziq Ox o’qiga …
    

#1 parallel #2 perpendikulyar #3 kesishgan #4 kesishmaydigan #5 ustma-ust

11. 
    Funksiya P(x)= formula bilan berilgan P(3) ni toping #1 #2 #3 3 #4 5 #5 7
    
12. 
    OA to’g’ri chiziq koordinatalar boshidan va A( nuqtadan o’tadi. Shu to’g’ri chiziq quyidagi funksiyalardan qaysi birining grafigi bo’ladi? y=7x , y= -14x, y=14x , y= -7x ,y= 21x
    

#1 y=7x #2 y= -14x, #3 y=14x , #4 y= -7x , #5 y= 21x

11. 
    To’g’ri chiziqning Ox o’qi bilan kesishish nuqtasini toping. Y=x+1 #1 x= -1 #2 x= #3 x= #4 x=- #5 x=-3
    
12. 
    To’g’ri chiziqning Ox o’qi bilan kesishish nuqtasini toping. Y=x+3
    

11. 
    Kitob va dafatr birgalikda 1100 so’m turadi.Kitob narxining 5% I daftar narxining 10% I dan 25 so’m qimmat. Daftar qancha turadi?
    

11. 
    Funksiya P(x)= formula bilan berilgan P(4) ni toping
    
12. 
    y= kx+3 funksiyaning grafigi P(-6;9) nuqtadan o’tishi ma’lum bo’lsa k ni toping.
    

11. 
    To’g’ri chiziq A(0;-1) va B(2;5) nuqtalardan o’tadi. Uning tenglamasini yozing
    

11. 
    To’g’ri chiziq A(0;-6) va B(2;6) nuqtalardan o’tadi. Uning tenglamasini yozing
    

11. 
    y= kx+b funksiya grafigi A(0;5) va B(4;45) nuqtalardan o’tadi k va b ni toping