标题: og13 diagnostic test 39题完全不懂啊 求大神解答。。 [打印本页] 作者: mogu724 时间: 2013-8-26 17:52 标题: og13 diagnostic test 39题完全不懂啊 求大神解答。。 in the xy-plane,if link k has negative slope and passes through the point (-5,r),is the x-intercept of line k positive?
1 the slope of line k is -5
2 r>0