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

Example 3 - Chapter 10 Class 11 Straight Lines

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

    Miscellaneous →

Transcript

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

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.