KUIS PtLSV
Quiz
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Others
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8th Grade
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Medium
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Di bawah ini yang merupakan PtLSV adalah ....
y - 1 = 0
18 = 2p + 2
x - 4 < 3
2x² + 2 > 1
Answer explanation
Pembahasan:
x - 4 < 3
merupakan kalimat terbuka yang memiliki tanda ketidaksamaan (<) dan mempunyai variabel satu serta berpangkat satu (x¹ = x)
2.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Di bawah ini merupakan PtLSV, kecuali ....
2x - 8 > 20
6x + 2 ≤ 18
-5x + 2 > 10
4x - 2y ≤ 10
Answer explanation
Pembahasan :
4x - 2y ≤ 10
memiliki 2 variabel yakni x dan y
Sehingga bukan PtLSV
3.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Model matematika yang tepat untuk gambar diatas adalah ... (Jika x = banyaknya kelereng dalam 1 kotak)
8x < 4
4x < 8
4x = 8
4x + 8
Answer explanation
Pembahasan:
x = banyaknya kelereng dalam 1 kotak
Kotak ada 4
Kelereng ada 8
Sehingga, 4x < 8
4.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Tentukan nilai y dari pertidaksamaan di bawah ini!
6y - 17 = -3y + 10
y ≥ 3
y ≤ 3
y ≥ 9
y ≤ 9
Answer explanation
Pembahasan :
• Jalan 1
6y - 17 ≤ -3y + 10
6y - 17 + 17 ≤ -3y + 10 + 17
6y ≤ -3y + 27
6y + 3y ≤ 27
9y ≤ 27
y ≤ 3
• Jalan 2
6y - 17 ≤ -3y + 10
6y + 3y ≤ 10 + 17
9y ≤ 27
y ≤ 3
5.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Tentukan nilai z dari pertidaksamaan di bawah ini!
2(z-5) + 1 > 7
z > 8
z < 8
z ≤ 8
z ≥ 8
Answer explanation
Pembahasan:
2(z-5) + 1 > 7
2z - 10 + 1 > 7
2z > 7 + 10 - 1
2z > 16
z > 8
6.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Tuliskan makna dari garis bilangan tersebut!
x ≤ 12
x ≥ 12
x > 12
x > -12
Answer explanation
Pembahasan:
Misalkan titik = x
Arah kanan ke positif : > (besar)
Titik tidak penuh berarti tidak ada garis bawah
Sehingga, x > 12
7.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Tuliskan makna dari garis bilangan tersebut!
x < 4
x > 4
x ≤ -4
x ≥ -4
Answer explanation
Pembahasan:
Misalkan titik = x
Arah kiri ke negatif : < (kecil)
Titik penuh berarti ada garis bawah : ≤
Sehingga, x ≤ -4
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