Math Problem Statement

Solve the system of equations.

[\begin{aligned} & -4x+3y = -2 \\ & y=x-1 \end{aligned}]

Solution

To solve the given system of equations:

& -4x + 3y = -2 \tag{1} \\ & y = x - 1 \tag{2} \end{aligned}$$ ### Step 1: Substitute $$y = x - 1$$ (from Equation (2)) into Equation (1) Substitute $$y$$ into the first equation: $$-4x + 3(x - 1) = -2$$ Simplify: $$-4x + 3x - 3 = -2$$ Combine like terms: $$- x - 3 = -2$$ Add 3 to both sides: $$- x = 1$$ Solve for $$x$$: $$x = -1$$ ### Step 2: Substitute $$x = -1$$ into Equation (2) Now substitute $$x = -1$$ into $$y = x - 1$$: $$y = -1 - 1$$ $$y = -2$$ ### Final Solution: The solution to the system of equations is: $$\boxed{x = -1, y = -2}$$ ### Verification: 1. Substitute $$x = -1$$ and $$y = -2$$ into Equation (1): $$-4(-1) + 3(-2) = 4 - 6 = -2 \quad \text{(True)}.$$ 2. Substitute $$x = -1$$ into Equation (2): $$y = -1 - 1 = -2 \quad \text{(True)}.$$ The solution satisfies both equations. --- Do you want further explanation or have questions? Here are five related questions to explore: 1. How can substitution be used to solve other systems of equations? 2. What is the elimination method for solving systems of equations? 3. How can you check the solution graphically? 4. What happens if the system of equations has no solution? 5. How can matrices be used to solve systems of equations? **Tip**: Always verify solutions by substituting them back into the original equations!

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations
Substitution Method

Formulas

y = mx + b (slope-intercept form)
Substitution of variables

Theorems

Basic properties of equality

Suitable Grade Level

Grades 8-10