Quantity A: the shortest distance between the line x+y=3 and 2x+2y=4Quantity B:

游客2024-01-12 46

问题 Quantity A: the shortest distance between the line x+y=3 and 2x+2y=4
Quantity B: 1

选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.

答案 B

解析直线2x+2y=4相当于x+y=2，两条直线x+y=3和x+y=2可以表示成下图所示，它们之间的最短距离当然小于1，选择B。

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Quantity A: the shortest distance between the line x+y=3 and 2x+2y=4Quantity B:

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Solveforxifthemidpointbetweenthetwopoints(x,1)and(-2,-3)is(5,-1).

[img]2012q1/ct_egreqm_egreqtbz2_0223_20121[/img][br]Betweenwhichtwoconsecut

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