若直線L:y=2通過(1,a),(3,b)和(-4,c)三點,,求a.b.c的值?

2008-09-19 4:37 am
1.若直線L:y=2通過(1,a),(3,b)和(-4,c)三點,,求a.b.c的值
2.若直線L:y= - 3/4x通過 A(a,6) 和B(6,b)兩點,求a和b的值

回答 (1)

2008-09-19 4:58 am
✔ 最佳答案
1.
a = b = c = 2 because the line is y =2.
2.
For A, when y = 6, x = -4y/3 = (-4)(6)/3 = -8.
For B, when x = 6, y = -3x/4 = (-3)(6)/4 = -9/2.


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