Math Problem Statement

Consider this system of linear equations:

y = –3x + 5

y = mx + b

Which values of m and b will create a system of linear equations with no solution?

m = –3 and b = –3 m = 5 and b = –3 m = 3 and b = 5 m = -3 and b = 5

Solution

To determine which values of mm and bb will result in a system of linear equations with no solution, we need to analyze the given equations:

  1. First equation: y=3x+5y = -3x + 5
  2. Second equation: y=mx+by = mx + b

Condition for No Solution:

A system of linear equations has no solution when the lines are parallel. Parallel lines have the same slope but different y-intercepts.

Step 1: Slope and intercept of the first equation

  • The slope (m1m_1) of the first equation is 3-3.
  • The y-intercept (b1b_1) of the first equation is 55.

Step 2: Analyze the options for mm and bb:

  • If the second equation has a slope (m2m_2) equal to 3-3, the lines will be parallel if their y-intercepts (bb) are different.

Step 3: Evaluate each option:

  1. m=3m = -3 and b=3b = -3:

    • Slope: m2=3m_2 = -3, which matches m1m_1.
    • Intercept: b2=3b_2 = -3, which is different from b1=5b_1 = 5.
    • Result: No solution (lines are parallel).
  2. m=5m = 5 and b=3b = -3:

    • Slope: m2=5m_2 = 5, which does not match m1=3m_1 = -3.
    • Result: Not parallel (intersecting lines).
  3. m=3m = 3 and b=5b = 5:

    • Slope: m2=3m_2 = 3, which does not match m1=3m_1 = -3.
    • Result: Not parallel (intersecting lines).
  4. m=3m = -3 and b=5b = 5:

    • Slope: m2=3m_2 = -3, which matches m1=3m_1 = -3.
    • Intercept: b2=5b_2 = 5, which is the same as b1=5b_1 = 5.
    • Result: Infinite solutions (lines are the same).

Final Answer:

The values of mm and bb that create a system of linear equations with no solution are: m=3 and b=3\boxed{m = -3 \text{ and } b = -3}

Let me know if you'd like further clarification or calculations! 😊


5 Related Questions:

  1. What is the general condition for two lines to have infinite solutions?
  2. How can you determine the point of intersection for two non-parallel lines?
  3. What happens when two lines have different slopes?
  4. How do you graph a system of linear equations with no solution?
  5. Can two lines with the same slope and y-intercept ever have no solution?

Tip:

To identify parallel lines quickly, focus on their slopes. Equal slopes mean they are parallel (or identical if intercepts match).

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Parallel Lines
Slope-Intercept Form

Formulas

y = mx + b

Theorems

Condition for parallel lines: equal slopes but different intercepts

Suitable Grade Level

Grades 8-10