Math Problem Statement

Solve the system of equations: -2x + y = 3 and 4y = -2 + x.

Solution

The system of equations given in the image is:

-2x + y &= 3 \\ 4y &= -2 + x \end{aligned}$$ We need to solve this system to find the values of $$x$$ and $$y$$. ### Step 1: Solve one equation for $$x$$ or $$y$$ Let's start with the second equation: $$4y = -2 + x$$ Rearrange it to express $$x$$ in terms of $$y$$: $$x = 4y + 2$$ ### Step 2: Substitute $$x$$ into the first equation Now substitute $$x = 4y + 2$$ into the first equation: $$-2(4y + 2) + y = 3$$ Simplify: $$-8y - 4 + y = 3$$ $$-7y - 4 = 3$$ Add 4 to both sides: $$-7y = 7$$ Divide by $$-7$$: $$y = -1$$ ### Step 3: Substitute $$y = -1$$ into the equation for $$x$$ Now substitute $$y = -1$$ into $$x = 4y + 2$$: $$x = 4(-1) + 2 = -4 + 2 = -2$$ ### Solution: The solution to the system of equations is $$x = -2$$ and $$y = -1$$, which corresponds to option **A** $$(-2, -1)$$. Would you like further details or have any other questions? Here are 5 related questions to expand on this: 1. How do you verify the solution to a system of equations? 2. Can this system of equations be solved using the elimination method? 3. What is the graphical interpretation of the solution to a system of equations? 4. How would the solution change if the coefficients were different? 5. How do you solve systems of equations using matrices? **Tip:** Always check your solution by plugging the values back into the original equations to ensure they satisfy both.

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Math Problem Analysis

Mathematical Concepts

Linear Algebra
Systems of Equations

Formulas

Substitution Method
Equation Rearrangement

Theorems

Linear Equations Solution Theorem

Suitable Grade Level

Grades 9-11