Math Problem Statement

answer

Solve the system of equations by the substitution method. x = 4y - 3 and x = 2y - 1

Solution

Let's solve the system of equations using the substitution method:

Given the system: x=4y3x = 4y - 3 x=2y1x = 2y - 1

Step 1: Set the equations equal to each other

Since both expressions are equal to xx, we can set them equal to each other: 4y3=2y14y - 3 = 2y - 1

Step 2: Solve for yy

Move the terms involving yy to one side: 4y2y=1+34y - 2y = -1 + 3 2y=22y = 2 y=1y = 1

Step 3: Substitute y=1y = 1 into one of the original equations to find xx

Using x=4y3x = 4y - 3: x=4(1)3=43=1x = 4(1) - 3 = 4 - 3 = 1

Solution:

The solution is (1,1)(1, 1).

Would you like more details or have any questions?

Here are five related questions to deepen understanding:

  1. What happens if both equations have no solution?
  2. Can the substitution method always be applied to any system of equations?
  3. How does the solution change if the system represents parallel lines?
  4. What is the graphical interpretation of the solution to this system?
  5. How does the substitution method differ from the elimination method?

Tip: Always simplify the equations as much as possible before starting the substitution process to avoid unnecessary complications.

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Equations

Formulas

Set the expressions for x equal: 4y - 3 = 2y - 1

Theorems

Substitution method in algebra

Suitable Grade Level

Grades 8-10