求助 PREP上一题 多谢（两线相交在点（4,3））

catherine66

In the xy coordinate plane, line L and line K intersect at point (4, 3). Is the product of their slops negative?

(1) The product of the x-intercepts of the line L and K is positive
(2) The product of the lines L and K are negative

此题答案C  谢谢谢谢谢！

catherine66

一周没人理我
只能自己顶一下...