Math Problem Statement

After solving a system of equations using substitution, you end up with the equation 3 = 2. What is true about the slope and y-intercepts of the lines in the system of equations?

Solution

The equation 3=23 = 2 is a contradiction, meaning that the system of equations has no solution. This happens when the two equations in the system represent parallel lines.

What is true about the slopes and y-intercepts?

  • Slopes: The slopes of the lines are the same. This is because parallel lines have identical slopes.
  • Y-intercepts: The y-intercepts of the lines are different. This difference is what ensures that the lines never intersect, creating a system with no solution.

Would you like me to go deeper into solving such systems or explaining parallel lines in detail?

Here are 5 questions to expand on this:

  1. How can we determine whether two lines are parallel from their equations?
  2. What happens if the slopes are the same but the y-intercepts are also the same?
  3. Can you provide an example of a system of equations that would result in a contradiction like 3=23 = 2?
  4. How does substitution help identify inconsistent systems?
  5. What are the geometric interpretations of consistent, inconsistent, and dependent systems?

Tip: To spot parallel lines in slope-intercept form (y=mx+by = mx + b), compare their slopes (mm)—if they are equal and their y-intercepts (bb) are different, the lines are parallel.

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Math Problem Analysis

Mathematical Concepts

Systems of Equations
Parallel Lines
Slopes and Y-Intercepts

Formulas

Slope-Intercept Form: y = mx + b

Theorems

Parallel Lines Theorem

Suitable Grade Level

Grades 8-10