Fungsi Kuadrat Kelas 9

Fungsi Kuadrat Kelas 9

9th Grade

10 Qs

quiz-placeholder

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Fungsi Kuadrat Kelas 9

Fungsi Kuadrat Kelas 9

Assessment

Quiz

Mathematics

9th Grade

Medium

Created by

masni ramadani

Used 145+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Berikut merupakan fungsi kuadrat, kecuali ... .

f(x)=3x26x+9f\left(x\right)=3x^2-6x+9

f(x)=(x1)2+4f\left(x\right)=\left(x-1\right)^2+4

f(x)=(2x22)(x213)f\left(x\right)=\left(2x^2-2\right)\left(x^2-13\right)

f(x)=(x+6)(x+9)f\left(x\right)=\left(x+6\right)\left(x+9\right)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Diketahui persamaan kuadrat 3x2 - 6x - 9 = 0, nilai a, b,dan c berturut- turut dari persamaan tersebut adalah

3, 6 dan 9

3, 9 ,dan 6

3, -6 , dan 9

3, 9 dan -6

3, -6 dan -9

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Titik potong dengan sumbu x grafik fungsi kuadrat pada gambar di samping adalah …

(-1, 0) dan (2 , 0)

(-1 ,0) dan ( 3, 0)

(0, -1 ) dan (0,2 )

(0, -1 ) dan (0, 3 )

(-1 ,1) dan ( 3, 1)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fungsi  f(x)=ax2+bx+cf\left(x\right)=ax^2+bx+c  memiliki nilai optimum ....

 y=b2+4ac2ay=-\frac{b^2+4ac}{2a}  

 y=b2+4ac4ay=-\frac{b^2+4ac}{4a} 

 y=b24ac2ay=-\frac{b^2-4ac}{2a} 

 y=b24ac4ay=-\frac{b^2-4ac}{4a} 

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nilai diskriminan dari f(x) = 3x2 – 7x + 4 adalah ....

1

4

7

-3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koordinat titik balik grafik fungsi f(x) = 2x2 – 12x + 10 adalah ....

(3,8)

(3,6)

(3,-4)

(2, 8)

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

3X2+10X+3=0 bentuk grafik fungsi ini terbuka ke ....

atas

bawah

kanan

kiri

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