In the xy-plane, line n passes through the origin and has slope 4. If points (1, c) and (d, 2) are on line n, what is the value of $$frac{c}{d}$$?_出国考试答疑器_GMAT_试题

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题目：

In the xy-plane, line n passes through the origin and has slope 4. If points (1, c) and (d, 2) are on line n, what is the value of $$frac{c}{d}$$?

选项:

A、 0.25

B、 0.5

C、 2

D、 4

E、 8

答案:

E

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老师，可以讲一下这道题吗？知道是基础题但我还是算错了。

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