二元一次方程与一次函数
Authored by yuedan Qi
Mathematics
1st Grade
Used 3+ times
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6 questions
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1.
OPEN ENDED QUESTION
3 mins • Ungraded
方程x+y=5的解有多少个？写出其中几个？
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2.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
在一次函数y=5-x的图像上任取一点，它的坐标适合方程x+y=5吗？
(a)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一次函数y=3x-1与y=2x图像的交点的坐标是（1,2），求方程组3x-y=1,y=2x的解。
x=1,y=2
x=2,y=1
x=2,y=5
x=2,y=4
4.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
以方程x/4-3y=2的解为坐标的点都在直线y=——上。
(a)
5.
OPEN ENDED QUESTION
3 mins • Ungraded
一次越野跑中，当小明跑了1600米时，小明、小刚所跑的路程y（米）与时间t（秒）之间的函数刮泥如图所示，则这次越野跑的全程为——。
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6.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
若 一次函数y=3x-5与y=2x-7的图像的交点P的坐标是（-2,-11），则方程组3x-y=5,2x-y=7的解为——。
(a)
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