If the lines represented by the equation 6x^2 + 5xy + y^2 = 0 intersect at the o

Practice Questions

Q1
If the lines represented by the equation 6x^2 + 5xy + y^2 = 0 intersect at the origin, what is the sum of their slopes?
  1. -5/6
  2. 5/6
  3. 1
  4. 0

Questions & Step-by-Step Solutions

If the lines represented by the equation 6x^2 + 5xy + y^2 = 0 intersect at the origin, what is the sum of their slopes?
Correct Answer: 0
  • Step 1: Identify the given equation, which is 6x^2 + 5xy + y^2 = 0.
  • Step 2: Recognize that this is a quadratic equation in two variables (x and y) that can represent two lines.
  • Step 3: Rewrite the equation in the standard form of a quadratic equation: Ax^2 + Bxy + Cy^2 = 0, where A = 6, B = 5, and C = 1.
  • Step 4: Use the formula for the sum of the slopes of the lines represented by the equation, which is -B/A.
  • Step 5: Substitute the values of B and A into the formula: -B/A = -5/6.
  • Step 6: Calculate the result: -5/6 is the sum of the slopes of the lines.
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