
CỦNG CỐ: HÀM SỐ BẬC NHẤT
Authored by THU HUỆ
Mathematics
8th Grade
Used 7+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
Trong các hàm số sau, hàm số nào là hàm số bậc nhất ?
2.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
Hệ số a của x, hệ số tự do b của hàm số y = – 5x + 3 là
a = 3; b = - 5
a = - 5; b = 3
a = 5; b = - 3
a = - 5; b = - 3
3.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
Hàm số bậc nhất có hệ số của x bằng - 7 và hệ số tự do bằng 8 là
y = 8 - 7x
y = 8 + 7x
y = 8x + 7
y = 8x - 7
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Cho hàm số y= 2x + 1. Tìm giá trị của y khi x= − 3.
- 7
7
- 5
5
Answer explanation
Với x = - 3 thì y = 2 .(- 3) + 1 = - 5
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Mỗi ký xoài giá 20 nghìn đồng. Hàm số biểu thị số tiền y (nghìn đồng) khi mua x kg xoài là
y = 20x
y = 20
y = 20 + x
x = 20y
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