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Persamaan Linier

Authored by INDAH CAHYANI

Mathematics

12th Grade

Used 5+ times

Persamaan Linier
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10 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Tentukanlah himpunan penyelesaian dari sistem persamaan linier tiga variabel (SPLTV) berikut ini.

x + y – z = –3

x + 2y + z = 7

2x + y + z = 4

{(–1, -1, 4)}

{(–1, 2, -4)}

{(–1, 2, 4)}

{(–1, -2, 4)}

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Tentukan himpunan penyelesaian dari sistem persamaan linear tiga variabel berikut ini.

x + 3y + 2z = 16

2x + 4y – 2z = 12

x + y + 4z = 20

{(-7, 1, 3)}

{(7, -1, 3)}

{(7, 1, -3)}

{(7, 1, 3)}

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Harga 2 kg mangga, 2 kg jeruk, dan 1 kg anggur adalah Rp. 76.000, 00. Harga 1 kg mangga, 2 kg jeruk, 2 kg anggur adalah Rp. 98.000, 00. Harga 2 kg mangga, 2 kg jeruk, dan 3 kg anggur adalah Rp. 136.000. Nyatakan ke dalam model matematika!

x+y+z=76000x+y+z=76000
x+2y+2z=98000x+2y+2z=98000
2x+2y+z=1360002x+2y+z=136000

2x+2y+z=760002x+2y+z=76000
2x+y+2z=980002x+y+2z=98000
2x+2y+3z=1360002x+2y+3z=136000

2x+2y+z=760002x+2y+z=76000
x+2y+2z=98000x+2y+2z=98000
2x+3y+2z=1360002x+3y+2z=136000

2x+2y+z=760002x+2y+z=76000
x+2y+2z=98000x+2y+2z=98000
2x+2y+3z=1360002x+2y+3z=136000

2x+2y+z=760002x+2y+z=76000
x+2y+2z=136000x+2y+2z=136000
2x+2y+3z=980002x+2y+3z=98000

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Diketahui sistem persamaan linear 

 3x+2y3z=5; 3x+2y-3z=5;\   x+y2z=3;x+y-2z=3;   xy+z=4x-y+z=-4  . 

Nilai x + y + z = … 

-3

-2

-1

4

5

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Jumlah tiga bilangan sama dengan 45. Bilangan pertama ditambah 4 sama dengan bilangan kedua, dan bilangan ketiga dikurangi 17 sama dengan bilangan pertama. Bentuklah tiga persamaan linear tiga variable sesuai cerita di atas!

x + y + z = 45

x + 4 = y

z – 17 = x

x + 4 = y

z – 17 = x

x = 45

x + y + z = 45

z – 17 = x

y = 4z

x + y = 45

x + 4 = y

z = x + 17

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Jika himpunan penyelesaian dari sistem :

x - 2y + 4z = -3

3x + y - 2z = 12

2x + y - 3z = 11 adalah { x, y,z } maka nilai x . y . z = ….

-3

3

-6

4

6

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Nilai x dan y yang memenuhi sistem persamaan 3x + 2y = 6 ; 2x + 4y = - 4 adalah....

x = 1 ; y = 2

x = 0 ; y = 3

x = - 4 ; y = 3

x = 4 ; y = - 2

x = 4 ; y = - 3

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