Why “ax +0.y + b = 0” is considered as Linear Equation in Two Variables? ๐Ÿค”

 You're right; the equation `ax + 0y + b = 0` doesn't strictly relate two variables in the same way that equations like `2x + y = 3` or `x - y + 5 = 0` do. While technically it falls under the general form of a linear equation in two variables (`ax + by + c = 0`), there's an important distinction to understand:


**Linear Equations vs. Degenerate Cases:**


1. **Linear Equations:**

   - A true linear equation in two variables represents a **non-vertical, non-horizontal line** on a coordinate plane.

   - In such equations, both `x` and `y` have **coefficients that are not zero**. These coefficients determine the **slope and y-intercept** of the line the equation represents.

   - Changing the values of `x` and `y` in the equation results in different corresponding values for the other variable, maintaining the relationship represented by the line.


2. **Degenerate Cases:**

   - Equations like `ax + 0y + b = 0` (where `a ≠ 0`) and `0x + by + c = 0` (where `b ≠ 0`) are considered **degenerate cases** of linear equations.

   - These cases represent **special situations** that don't truly depict the relationship between two variables in the same way as standard linear equations.


**Why they're included:**


- Despite not strictly fulfilling the role of relating two variables in the usual sense, these degenerate cases are still considered within the category of linear equations in two variables for a few reasons:

    - They can be **obtained from manipulating standard linear equations** through algebraic operations (e.g., multiplying both sides by a constant).

    - They can be **helpful in understanding** and solving certain types of problems, such as systems of linear equations where one or both equations may represent a horizontal or vertical line.

    - Including them maintains a **broader scope** within the definition of linear equations in two variables.


**In essence:**


While `ax + 0y + b = 0` technically falls under the umbrella of linear equations in two variables due to its form, it's crucial to recognize that it **doesn't represent a true relationship between two variables** in the same way as standard linear equations do. It's a **degenerate case** that arises in specific situations and has its own unique characteristics.

Comments

Popular posts from this blog

Arise! Awake! And Go To The Greats!

How did Bhagat Singh join HSRA? (DeepSeek)

เคถेเค–เคฐ