Math Problem Statement

Solve each system by substitution. 1) y = 7x - 10, y = -3

Solution

The problem is asking to solve a system of equations using substitution. The system provided is:

  1. y=7x10y = 7x - 10
  2. y=3y = -3

Steps to Solve:

  1. Substitute y=3y = -3 (from the second equation) into the first equation: 3=7x10-3 = 7x - 10

  2. Solve for xx: Add 10 to both sides: 3+10=7x-3 + 10 = 7x 7=7x7 = 7x

    Divide both sides by 7: x=1x = 1

  3. Find yy (if necessary, though it’s already given as y=3y = -3): Substituting x=1x = 1 into y=7x10y = 7x - 10: y=7(1)10y = 7(1) - 10 y=3y = -3

Final Answer:

The solution to the system is: x=1,y=3x = 1, \, y = -3

Would you like me to explain the steps in more detail or assist with similar problems? Let me know!


Related Questions:

  1. How do you solve systems of equations graphically?
  2. What happens when two lines are parallel in a system of equations?
  3. Can substitution be used for all systems of equations? Why or why not?
  4. How do you solve a system using the elimination method?
  5. What are examples of real-world problems involving systems of equations?

Tip:

Always check your solution by substituting both xx and yy into the original equations to verify correctness!

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations
Substitution Method

Formulas

Substitution: Replace one variable with its equivalent expression from another equation

Theorems

Linear Equation Properties

Suitable Grade Level

Grades 8-10