數學一題問題 好易者對各位勁人黎講

2007-12-15 6:41 am
4)
It is given that the graph of the equation x + ay + b = 0, where a and b are constants, passes through (–1, 3). Which of the following pairs may be the values of a and b?
A.a = –2, b = 1
B.a = –1, b = 4
C.a = 1, b = –3
D.a = 2, b = –7

回答 (1)

2007-12-15 6:52 am
✔ 最佳答案
-1 + 3a + b = 0

B) -1 + 3(-1) + 4 = 0 ---
參考: ME


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