e 類數我都未學過,,
可唔可以教下點計??
最好有解釋.. （解釋中英都得）
link: http://xs217.xs.to/xs217/07304/Q22.jpg
升F.3 maths..
2007-07-27 1:42 am
回答 (7)
2007-07-27 1:49 am
✔ 最佳答案
D因為兩條線相交嗰點的坐標是(2,-2)
x坐標是2
y坐標是-2
所以x=2 & y=-2
2007-07-26 17:49:59 補充：
應該係咁:因為兩條線相交嗰點的坐標是(-2,2)x坐標是-2y坐標是2所以x=-2 & y=2
2007-07-29 7:14 pm
D
因為兩條線相交嗰點的坐標是(2,-2)
x坐標是2
y坐標是-2
所以x=2 & y=-2
因為兩條線相交嗰點的坐標是(2,-2)
x坐標是2
y坐標是-2
所以x=2 & y=-2
2007-07-27 6:24 am
D
because the solution of it in the figure is (-2,2)
first look the 橫的
second look the 直的
照字代
because the solution of it in the figure is (-2,2)
first look the 橫的
second look the 直的
照字代
2007-07-27 2:16 am
Answer is (-2,2)
That means D.
That means D.
2007-07-27 2:14 am
The answer is D.
You should remember that write the value of x first (x,y)
You should remember that write the value of x first (x,y)
2007-07-27 1:58 am
其實係咁
兩條線ge相交點就係solution
首先一條linear equation such as y=mx+c 其實係指出係哩條equation上,y同x ge relationship.
當我提供x=一個數ge時候,你就憑條equation搵出相對ge y,所以話equation其實係x同y ge relation就係咁解.
而家有兩條equation,咁個solution要同時satisfy到兩條equation,所以solution就係個相交點
兩條線ge相交點就係solution
首先一條linear equation such as y=mx+c 其實係指出係哩條equation上,y同x ge relationship.
當我提供x=一個數ge時候,你就憑條equation搵出相對ge y,所以話equation其實係x同y ge relation就係咁解.
而家有兩條equation,咁個solution要同時satisfy到兩條equation,所以solution就係個相交點
2007-07-27 1:51 am
由於兩條線都穿過 (- 2, 2) . . . 由此答案是 D
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