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15 questions
x+y=4
當x=7時,y=?
3
11
-3
7/4
x+2y=5
當x=1時,y=?
4
2
5
3
x+2y=3
當x=5時,y=?
-1
1
8
-7
y=3x-2
當x=2時,y=?
4
2
30
8
x+2y=5
當x=5時,y=?
0
1
10
-1
x+2y=5
當x=-1時,y=?
3
6
2
4
x+2y=5
當x=0時,y=?
5/2
2/5
2
5
x+2y=5
當x=7時,y=?
-1
6
1
-6
y=-2x+3
當x=-1時,y=?
5
1
-1
3
x+2y=5
當x=9時,y=?
-2
7
2
-4
y=x-3
當x=-1時,y=?
-4
4
2
-2
y=5x-3
當x=-1時,y=?
-8
2
-3
4/5
y=5x-3
當x=2時,y=?
2
7
1
2/5
y=-2x+3
當x=1時,y=?
1
-5
-1
2
y=-2x-3
當y=1時,x=?
1
-1
-5
5
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