Math Problem Statement

Solve the system: y = 3x + 1 y = 2x + 2 Options: 1. (0, 1) 2. (2, 7) 3. (-2, -5) 4. (1, 4)

Solution

The system of equations given is:

y=3x+1y = 3x + 1 y=2x+2y = 2x + 2

We can solve this system by substitution or elimination. Let's use the substitution method:

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

Since both equations are equal to yy, we can equate the right-hand sides:

3x+1=2x+23x + 1 = 2x + 2

Step 2: Solve for xx.

Subtract 2x2x from both sides:

x+1=2x + 1 = 2

Now subtract 1 from both sides:

x=1x = 1

Step 3: Substitute x=1x = 1 into one of the original equations to find yy.

Substitute into the first equation:

y=3(1)+1=3+1=4y = 3(1) + 1 = 3 + 1 = 4

So, the solution to the system is x=1x = 1 and y=4y = 4, or the point (1,4)(1, 4).

The correct answer is the fourth option: (1,4)(1, 4).


Would you like further details or have any questions?

Here are 5 related questions to expand your understanding:

  1. What is the elimination method for solving systems of equations?
  2. Can a system of linear equations have no solution?
  3. How do you graphically interpret the solution to a system of linear equations?
  4. What happens when both equations in a system represent the same line?
  5. How do you solve systems of equations with more than two variables?

Tip: When solving a system of equations, always double-check your solution by substituting both variables back into the original equations.

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations

Formulas

Solving linear equations by substitution

Theorems

Equality of linear functions

Suitable Grade Level

Grades 8-10