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Straight Lines — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsStraight Lines1 Mark
MCQ
Two lines are said to be parallel if the difference of their slope is:
  • A
    $-1$
  • ✓
    $0$
  • C
    $1$
  • D
    None of these
✓

Answer

Correct option: B.
$0$
We know that two lines are said to be parallel if their slope is equal. If $m_1$ and $m_2$ are the slopes of two parallel lines, then it is represented as $m_1= m_2$.
The difference of their slope should be $m_1- m_2= 0.$

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