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标题: gwd-6-27 [打印本页]

作者: linlin3151 时间: 2008-2-17 19:31 标题: gwd-6-27

27. in the xy-plance, is the slope of line k positive?

(1) line k passes through the points(--1, --7) and (2, 5)

(2) line k has equation y=4x-3

answer: d

作者: anonym1106 时间: 2008-2-18 07:10

line k passes through the points(--1, --7) and (2, 5)得出K的直线方程是y=4x-3

作者: simbachu 时间: 2008-2-21 06:52

with condition one only, what if the line is not a straight one?

作者: freecell 时间: 2008-2-21 22:56

QUOTE:

以下是引用simbachu在2008-2-21 6:52:00的发言：
with condition one only, what if the line is not a straight one?

how to define the slope of a line not straight

作者: shelleyzhdai 时间: 2008-2-22 18:11

 in geometry, line refers to straight line.

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