Example 1 - Find slope of lines - Chapter 10 Class 11 - Slope - Finding slope

  1. Chapter 10 Class 11 Straight Lines
  2. Serial order wise
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Example 1 Find the slope of the lines: Passing through the points (3, – 2) and (–1, 4) We know that slope between two points (x1,y1) & (x2,y2) is m = (𝑦2 − 𝑦1)/(𝑥2 − 𝑥1) Here x1 = 3, y1 = -2, & x2 = -1, y2 = 4 Putting values Slope = (4 − ( − 2))/( − 1 − 3) = (4 + 2)/( − 4) = 6/( − 4) = ( − 3)/2 Example 1 Find the slope of the lines: (b) Passing through the points (3, – 2) and (7, – 2), We know that slope between two points (x1,y1) & (x2,y2) is m = (𝑦2 − 𝑦1)/(𝑥2 − 𝑥1) Here x1 = 3, y1 = -2, & x2 = 7, y2 = -2 Putting values Slope = ( − 2 − ( − 2))/(7 − 3) = ( − 2 + 2)/4 = 0/4 = 0 Example 1 Find the slope of the lines: (c) Passing through the points (3, – 2) and (3, 4), We know that slope between two points (x1,y1) & (x2,y2) is m = (𝑦2 − 𝑦1)/(𝑥2 − 𝑥1) Here x1 = 3, y1 = -2, & x2 = 3, y2 = 4 Putting values Slope = (4 − ( − 2))/(3 − 3) = (4 + 2)/0 = 6/0 = ∞ (not defined) Example 1 Find the slope of the lines: (d) Making inclination of 60° with the positive direction of x-axis. Slope = m = tan θ Given 𝜃 = 60° Hence, m = tan θ = tan 60° = √3

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