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

1

4. 
   k va b ning qanday qiymatlarida y=kx+b to’g’ri chiziq grafigi M(0;1
   

4

1

) va N(

5 _; 1

2 4

) nuqtalardan o’tadi?

#1 k=5/2, b=3/4 #2 k=-2/5,b=4/3 #3 k=2/5, b=4/3 #4 k=-2/5, b=1

4

5.. Tenglamalar sistemasini yeching: 2x+3y=7 3x-4y=2

#5 k=1/5, b=-3/4

#1 x=2, y=1 #2 x=1, y=5/3 #3 x=1, y=1/4 #4 x=3, y=1/3 #5 x=1/3, y= -1/4

6. 
   (x;y) sonlar juftligi 4x+3y=17
   

3x-4y=-6 sistemaning yechimi bo’lsa,x+y ni toping #1 6 #2 -4 #3 4 #4 -5 #5 5

6. 
   Ko'phad va birhad ko'payitmasini toping. (-5)(3x³ +7x² -x)=?
   

#1 -15x³ -35x² +5x #2 -15x²-37x +6x #3 -15x²-30x +9x #4 -15x³-32x² +9x #5 -15x² -35-9x³

6. 
   Birhadlarni ko'paytiring: (3a)(2b)=? #1 5ab#2 4ab#3 6ab#4 3ab#5 7ab
   
7. 
   ab-b ifodada umumiy ko'paytuvchini qavsdan tashqariga chiqatring.
   

#1 ab-b=b(a-1) #2 ab-b=-b(-1-a)#3 ab-b=a(b-1)#4 ab-b=a(-a-1)#5 ab+b=b(ab-1) 10. (7+x)(x-7)=?

#1 x² -49 #2 x² +7² #3 49²+x #4 x² +49 #5 7x² +x+7²

11. 
    Ifodani ko'phad shaklida yozing: (a+(b+c))(a-(b+c))
    

#1 a² +(b-c)² #2 a² -(b-c)²#3 a² -(b+c)² #4 a² +(b+c)² #5 a+(b-c)

11. 
    Tenglamani yeching: 8(x+2)-5x=-2(x+4,5)
    

#1 -5 #2 5 #3 6 #4 -4,5 #5 to’g’ri javob yo’q

5

11. 
    Tenglamani yeching: 7
    

7

:10=5,4:4x-1

#1 -1 #2 -1/4 #3 3/4 #4 2 #5 -2

11. 
    M(4;8) yozuvida 4 soni nima deyiladi?
    

#1 koordinata #2 ordinata #3 abssissa #4 chapdagi son #5 o’ngdagi son

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. 
    Agar biror sonlar to’plamidan olingan x ning bir qiymatiga biror qoida bo’yicha y son mos qilib qo’yilgan bo’lsa, u holda shu to’plamda
    

… aniqlangan deyiladi.

#1 o’zgaryvchi #2 o’zgarmas #3 argument #4 funksiya #5 TJY

11. 
    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. 
    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. 2y-3x+4=0
    

11. 
    Ikki xonali sonning raqamlari yig’indisi 9 ga teng. Shu raqamlar bilan teskari tartibda yozilgan son berilgan sondan 27 ta ortiq. Berilgan sonni toping.
    

11. 
    Funksiya P(x)= formula bilan berilgan P(7) ni toping
    
12. 
    x=15 da y= 3x-8 funksiyaning qiymatini toping.
    

11. 
    y= kx-3 funksiyaning grafigi P(7;18) nuqtadan o’tishi ma’lum bo’lsa k ni toping.
    

11. 
    To’g’ri chiziq A(0;-3) va B(2;5) nuqtalardan o’tadi. Uning tenglamasini yozing
    

11. 
    y= kx+b funksiya grafigi A(0;2) va B(2;8) nuqtalardan o’tadi k va b ni toping