118k views
0 votes
Y= 3x-1
2x+6=y substitution method

Y= 3x-1 2x+6=y substitution method-example-1

1 Answer

3 votes

Answer: (7, 20)

Concept:

There are three general ways to solve systems of equations:

  1. Elimination
  2. Substitution
  3. Graphing

Since the question has specific requirements, we are going to use substitution to solve the equations.

Solve:

Given equations

y = 3x - 1

2x + 6 = y

Substitute the y value since both equations has isolated [y]

2x + 6 = 3x - 1

Add 1 on both sides

2x + 6 + 1 = 3x - 1 + 1

2x + 7 = 3x

Subtract 2x on both sides

2x + 7 - 2x = 3x - 2x


\boxed{x=7}

Find the value of y

y = 3x - 1

y = 3(7) - 1

y = 21 - 1


\boxed{y=20}

Hope this helps!! :)

Please let me know if you have any questions

User Mostafa Vatanpour
by
7.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories