Math Problem Statement

Which system of equations has the same solution as the system below? 4x + 3y = 19 2x + 6y = 50

Solution

To determine which system of equations has the same solution as the original system:

Original system:

  1. 4x+3y=194x + 3y = 19
  2. 2x+6y=502x + 6y = 50

Step 1: Analyze the equivalent systems

An equivalent system must be derived from the original equations through algebraic manipulations, such as multiplying through by a constant.

Check each option:

  1. Option A:
    8x+3y=38-8x + 3y = -38 and 2x+6y=502x + 6y = 50
    The first equation does not match the original equation after any consistent manipulation (e.g., scaling or adding). This system is not equivalent.

  2. Option B:
    8x6y=38-8x - 6y = -38 and 2x+6y=502x + 6y = 50
    Similarly, scaling or manipulation cannot derive the first equation 8x6y=38-8x - 6y = -38 from the original system. This is not equivalent.

  3. Option C:
    4x6y=384x - 6y = -38 and 2x+6y=502x + 6y = 50
    If we manipulate 4x+3y=194x + 3y = 19, subtracting 6y6y from both sides produces 4x6y=384x - 6y = -38. Hence, this system is equivalent.

  4. Option D:
    8x6y=19-8x - 6y = 19 and 2x+6y=502x + 6y = 50
    Again, 8x6y=19-8x - 6y = 19 cannot be derived from the original equations. This system is not equivalent.

Correct Answer:

Option C: 4x6y=384x - 6y = -38 and 2x+6y=502x + 6y = 50.

Would you like a detailed explanation or further assistance?

Related Questions:

  1. What are the properties of equivalent systems of equations?
  2. How do you determine if two systems of equations are consistent?
  3. Can matrix transformations be used to check for equivalent systems?
  4. Why is subtracting or adding equations a valid operation in systems of equations?
  5. How do changes in coefficients affect the solutions of systems?

Tip:

When checking equivalency, always verify by substitution or consistent manipulation to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations
Equivalent Systems

Formulas

Linear equation formula: ax + by = c

Theorems

Properties of equivalent equations

Suitable Grade Level

Grades 8-10