2. 外语
  3. What is the slope of the line x=4?

What is the slope of the line x=4?

admin2011-03-08  9
问题 What is the slope of the line x=4?
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答案 This equation represents a vertical line; the y-intercept is 0, so the line is parallel to the y-axis. A vertical line has an undefined slope, because the denominator is 0.
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