To explain: vertical lines are a special case in the definition of parallel lines.
Answer to Problem 2CFU
If two lines have same slope and no common points, they are considered parallel lines. But in case of vertical lines are parallel by definition. The slope of all vertical lines is undefined. If two vertical lines share a common point, they are coinciding not parallel.
Explanation of Solution
Given information:
Vertical lines are a special case in the definition of parallel lines
Calculation If two lines have same slope and no common points, they are considered parallel lines. But in case of vertical lines are parallel by definition. There is no such proof required in case of vertical lines.
The slope of all vertical lines is undefined. If two vertical lines share a common point, they are coinciding not parallel.
Chapter 1 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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