When is the product of the slope of 2 perpendicular lines not equal to -1???

1 ⤊

When is the product of the slope of 2 perpendicular lines not equal to -1???

2007-11-07 13:05:36 · 2 answers · asked by Your mom 1 in Science & Mathematics ➔ Mathematics

2 answers

When one of the lines is horizontal and the other line is vertical. In that case the slope of the first line is zero and the slope of the second line is undefined.

2007-11-07 13:08:46 · answer #1 · answered by Northstar 7 · 1⤊ 0⤋

when one is vertical and the other is horizontal...

the slope of one line is undefined...

Â§

2007-11-07 13:08:50 · answer #2 · answered by Alam Ko Iyan 7 · 0⤊ 0⤋