GMAT 考满分题库

- 数学PS -
In a rectangular coordinate system, lines r and h both pass through the point (1,-1). The product of the slope of line r and line h is -1. The x-intercept of line r is 3. What is the vertical intercept of line h?
  • A1/3
  • B1/2
  • C1
  • D2
  • E3
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正确答案: C

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