Answer
Two lines with positive slopes cannot be perpendicular to each other.
Work Step by Step
RECALL:
$\\\\$Perpendicular lines have slopes that are negative reciprocals of each other (have a product of -1).
$\\$This means that one slope is positive while the other is negative, and their product is -1.
$\\\\\\$For this reason, two lines with positive slopes cannot be perpendicular to each other.
