Math Problem Statement

Solve the system of linear equations y = 2x - 7 and y = -x + 5.

Solution

The equations you've provided are:

  1. y=2x7y = 2x - 7
  2. y=x+5y = -x + 5

It looks like you may be interested in solving this system of equations. Let's solve for xx and yy by setting the two equations equal to each other, since they both equal yy.

Step 1: Set the two equations equal to each other.

2x7=x+52x - 7 = -x + 5

Step 2: Solve for xx.

Add xx to both sides to eliminate x-x: 2x+x7=52x + x - 7 = 5 Simplify: 3x7=53x - 7 = 5 Add 7 to both sides: 3x=123x = 12 Now, divide by 3: x=4x = 4

Step 3: Solve for yy.

Now that we know x=4x = 4, substitute it back into one of the original equations. Let's use y=2x7y = 2x - 7: y=2(4)7=87=1y = 2(4) - 7 = 8 - 7 = 1

Final Solution:

The solution to the system of equations is: x=4,y=1x = 4, \quad y = 1

Would you like more details on this process or have any further questions about this problem?

Here are some related questions:

  1. What are the graphical interpretations of these two equations?
  2. How would you solve this system using substitution instead of elimination?
  3. What happens if we multiply both equations by a constant before solving?
  4. How can we verify the solution (4,1)(4, 1)?
  5. What other methods can be used to solve a system of equations?

Tip: Always double-check your solution by substituting the values back into both original equations to verify consistency.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Systems of Equations
Substitution Method

Formulas

Set the equations equal to each other: 2x - 7 = -x + 5

Theorems

Equality Property of Equations

Suitable Grade Level

Grades 8-10