Math Problem Statement

6x-2y=8 y=3x-4

Solution

To solve the system of equations:

1) & \quad 6x - 2y = 8 \\ 2) & \quad y = 3x - 4 \end{align*}$$ We can use substitution or elimination. Since $$y$$ is already expressed in terms of $$x$$ in the second equation, substitution is a convenient method. ### Step 1: Substitute the value of $$y$$ from equation 2 into equation 1. $$6x - 2(3x - 4) = 8$$ ### Step 2: Expand and simplify. $$6x - 6x + 8 = 8$$ ### Step 3: Simplify the equation further. $$0x + 8 = 8$$ ### Conclusion: This simplifies to $$8 = 8$$, which is always true, indicating that the two equations are **dependent**. This means they represent the same line, and thus, there are **infinitely many solutions**. ### Interpretation: The system of equations does not have a unique solution. Instead, any point on the line $$y = 3x - 4$$ is a solution to the system. Would you like more details on any step or have any questions? ### Related Questions: 1. How do you determine if a system of linear equations is dependent, independent, or inconsistent? 2. What does it mean graphically when a system of equations has infinitely many solutions? 3. How do you find the solution set for a dependent system of equations? 4. How can you write one equation as a multiple of the other in a dependent system? 5. What happens if we introduce a third equation to this system? How do we check for consistency? ### Tip: When a system of equations simplifies to a true statement like $$8 = 8$$, it indicates that the equations represent the same line, leading to infinitely many solutions.

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Math Problem Analysis

Mathematical Concepts

Systems of Linear Equations
Substitution Method
Dependent Systems of Equations

Formulas

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Theorems

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Suitable Grade Level

Grades 9-12