126) line k and l intersect at point ( 16/5, 12/5 ) , what is the slope of line l (a) one of the angles formed at the intersection is 90 (b) line k passes through the origin 参考答案:. 思路:
以下是引用仔仔在2003-9-19 0:27:00的发言: 133题中 are m and k consecutive numbers ? 1) m+k=3 2) m-k =1 参考答案:. B 但是题中并未说k或m是否是整数,所以我觉得条件2还不能回答这个问题。 条件1加条件2才能得出m和k的值,判断是否连续。 我是不是想偏了?