Math Problem Statement

solve the system of linear equations: -2x+y=8,-4x+16=2y

Solution

Let's solve the system of linear equations:

\text{Equation 1:} & \quad -2x + y = 8 \quad \text{(1)} \\ \text{Equation 2:} & \quad -4x + 16 = 2y \quad \text{(2)} \end{align*}$$ ### Step 1: Simplify the Second Equation First, let's simplify the second equation by dividing all terms by 2: $$-2x + 8 = y$$ We can rewrite this as: $$y = -2x + 8 \quad \text{(3)}$$ ### Step 2: Substitution Notice that equation (3) is the same as equation (1). Therefore, both equations represent the same line, meaning the system of equations has infinitely many solutions. ### Conclusion Since both equations represent the same line, the system has infinitely many solutions. Any pair $$(x, y)$$ that satisfies one equation will satisfy the other. ### Solution The solution can be expressed as: $$\boxed{y = -2x + 8}$$ So, for any value of $$x$$, $$y$$ can be determined using the equation $$y = -2x + 8$$. Would you like more details, or do you have any questions? --- Here are 5 related questions for further practice: 1. Solve the system: $$3x + y = 7$$ and $$6x + 2y = 14$$. 2. Determine whether the system $$x - 2y = 5$$ and $$2x - 4y = 10$$ has one solution, no solution, or infinitely many solutions. 3. Find the intersection point of the lines $$y = 3x + 1$$ and $$y = -2x + 4$$. 4. Solve for $$x$$ and $$y$$: $$x + y = 10$$ and $$2x - y = 5$$. 5. If $$x + y = 2$$ and $$2x + 2y = 4$$, determine the number of solutions. **Tip:** When solving systems of linear equations, always check if the equations are multiples of each other. This can indicate if the system has infinitely many solutions or no solution at all.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Systems of Equations
Substitution Method

Formulas

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Theorems

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Suitable Grade Level

Grades 9-12