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Example 6 Write the equation of the line through the points (1, 1) and (3, 5). We know that equation of line through two points (x1, y1) & (x2, y2) is y y1 = (y2 y1)/(x2 x1) (x x1) Since equation of the line through the points (1, 1) and (3, 5). Here, x1 = 1, y1 = 1, & x2 = 3 and y2 = 5 Putting values (y (-1)) = (5 ( 1))/(3 1) (x 1) y + 1 = (5 + 1)/2 (x 1) y + 1 = 6/2 (x 1) y + 1 = 3(x 1) y + 1 = 3x 3 y 3x + 1 3 = 0 y 3x 2 = 0 Hence the required equation is y 3x 2 = 0

  1. Chapter 9 Class 11 Straight Lines
  2. Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo