[img]ct_gre5image084[/img]If corresponding sides of △ABC and △A’B’C’ above are

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问题

If corresponding sides of △ABC and △A’B’C’ above are proportional, what is y in terms of x ?

选项 A、3x/7
B、6x/7
C、2x
D、7x/3
E、14x/3

答案 D

解析如果△ABC与△A’B’C’的对应边成比例，那么y用x来表示是多少?
解：本题的正确答案为(D)。因为△ABC和△A’B’C’的对应边成比例，所以有：y/x=BC/B’C’=AB/A’B’=7/3 → y=7x/3

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