1. Chapter 10 Class 11 Straight Lines
  2. Serial order wise
  3. Examples

Example 3 - Class 11

Last updated at May 29, 2018 by

Example 3 - Line through (-2, 6), (4, 8) is perpendicular - Slope - Prependicularity

  1. Chapter 10 Class 11 Straight Lines
  2. Serial order wise
    3. Examples
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Example 3 Line through the points (–2, 6) and (4, 8) is perpendicular to the line through the points (8, 12) and (x, 24). Find the value of x. Let points be A(–2, 6), B(4, 8) , C(8, 12) and D(x, 24) If two lines are perpendicular , then product of their slope is –1 So, Slope of AB × Slope of CD = –1 We know that slope of a line through the points (x1, y1) , (x2, y2)is m = (𝑦2 − 𝑦1)/(𝑥2 − 𝑥1) 4 = –1(x – 8) 4 = –x + 8 x = 8 – 4 x = 4 Thus, value of x is 4

Chapter 10 Class 11 Straight Lines
Serial order wise

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