Geometry

Question Analysis
This question tests the understanding of the condition for perpendicular lines, which states that two lines are perpendicular if the product of their slopes is -1 ().

Key Concept Explanation
The slope of a line in the form is given by . For two lines to be perpendicular, the product of their slopes must be -1.

Option Analysis
Identify the slopes of each pair of lines:
For option A: and
Slope of the first line:
Slope of the second line:
Since , these lines are not perpendicular.

For option B: and
Slope of the first line:
Slope of the second line:

Click "Show Answer" to reveal the answer and analysis