JEE Mathematics · Easy

Straight Lines: Equation of line MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Equation of lineEasyQuestion 300002

Question

The equation of a line with slope m passing through (x₁, y₁) is:
  1. A
    y − y₁ = m(x − x₁)
    Correct
  2. B
    y = mx
  3. C
    y₁ = m(x − x₁)
  4. D
    x − x₁ = m(y − y₁)

Correct answer

y − y₁ = m(x − x₁)

Explanation

Point-slope form: y − y₁ = m(x − x₁). This is the most versatile form for writing line equations given a point and slope.