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

7

x-1 #4 y=4x-7 #5 y=7x+7

x  y

3

 2 ⁵

6

_ y  x _{ 1}11

3 4 12

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

7. 
   x;y) sonlar juftligi 3x+7y=23 sistemaning yechimi bo’lsa,x²+y² ni toping 5x-2y=11
   

#1 12 #2 9 #3 13 #4 16 #5 25

7. 
   Tenglamani yeching va to'g'ri javobni toping. 4x=0,24
   

#1 4x=0,24 x=0,24:4 x=0,06#2 4x=0,24 x=0,24:4 x=0,08#3 4x=0,24 x=0,24:4 x=0,07 #4 4x=0,24 x=0,24:4 x=0,05#5 4x=0,24 x=0,24*4 x=0,96

7. 
   Bo'lishbi bajaring: (-6x):(2x)=? #1 -5#2 -7#3 -4#4 -3#5 -6
   
8. 
   a² -9 nimaga teng?
   

#1 a² -18a+9 #2 a² +18a-9 #3 (a-3)(a+3) #4 a² +18a+9 #5 (a+3)(a+3)

7. 
   Ko'paytuvchilarga ajrating: 4(x+y)+3(x-y)²
   

#1 (x+y)(4+3(x-y))#2 (x-y)(4+3(x-y))#3 (x-y)(4-3(x-y))#4 (x-y)(4-3(x+y))#5 (x+y)(4+3(x+y)) 12. (z+5)²(z -5z+25)=?

#1 z³ +5³ #2 z³ -5³ #3 z³ +25#4 z³ -25#5 z³

13. Tenglamani yeching: 6.(2,3x-1)-3,5x+0,7x=0,5(x-14) #1 -10,5 #2 10,5 #3 2/21 #4 7 #5 -2/21

14. 
    Vertikal Oy to’g’ri chiziq … o’qi deyiladi.
    

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

14. 
    x<0,y>0 koordinatalar sistemasida nimani bildiradi?
    

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

14. 
    B(x;0) to’g’ri chiziq Ox o’qiga …
    

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

14. 
    y = kx funksiyaning grafigi k ning istalgan qiymatida koordinatalar … o’tuvchi to’g’ri chiziq bo’ladi. #1 pastidan #2 ustidan #3 o’qlaridan #4 boshidan #5 Hammasi to’g’ri
    
15. 
    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

14. 
    To’g’ri chiziqning Ox o’qi bilan kesishish nuqtasini toping. Y=2x-1
    

14. 
    4 ga bo’lganda 3 qoldiq, 10 ga bo’lganda 1 qoldiq chiqadigan va ikkinchi bo’linma birinchi bo’linmadan 13 ta kam bo’ladigan natural sonni toping.
    

14. 
    Funksiya P(x)= formula bilan berilgan P(10) ni toping
    
15. 
    y= 2x-4 funksiyaning koordinata o’qlari bilan kesishish nuqtalarini gtoping.
    

14. 
    y= kx-2 funksiyaning grafigi P(5;18) nuqtadan o’tishi ma’lum bo’lsa k ni toping.
    

14. 
    To’g’ri chiziq A(0;-2) va B(2;6) nuqtalardan o’tadi. Uning tenglamasini yozing
    

14. 
    y= kx+b funksiya grafigi A(0;3) va B(1;2) nuqtalardan o’tadi k va b ni toping