Question

Consider the line 3x - 4 y = 7.

What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?

Answer 1

The slope of a line perpendicular to this line is -1/3. The slope of a line parallel to this line would be 3.

Explanation:

Perpendicular lines have opposite(sign) and reciprocal slopes.

Parallel lines have the same slope.