1. Choice (d) is correct.  The line is 2x - 7y = 13  Slope of the line, m = - coefficient of x / coefficient of y = -(2/-7) = 2/7 This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding. For more please visit here: httpsRead more

    Choice (d) is correct. 
    The line is 2x – 7y = 13 
    Slope of the line, m = – coefficient of x / coefficient of y = -(2/-7) = 2/7
    This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-9

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  2. Choice (a) is correct.  Here, θ = 60° Slope of the line = m = tan 60° = √3 This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding. For more please visit here: https://www.tiwariacademy.com/ncert-solutions/class-11/maRead more

    Choice (a) is correct. 
    Here, θ = 60°
    Slope of the line = m = tan 60° = √3
    This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-9

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    • 13
  3. Choice (b) is correct.  Slope of the line AB = m = y₂ - y ₁/x₂ - x₁= -7 - 6/9 - 3 = -13/6 Slope of the line perpendicular to line AB = -1/m = 6/13 This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding. For more pleaRead more

    Choice (b) is correct. 
    Slope of the line AB = m = y₂ – y ₁/x₂ – x₁= -7 – 6/9 – 3 = -13/6
    Slope of the line perpendicular to line AB = -1/m = 6/13
    This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-9

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    • 3
  4. Choice (c) is correct. Let the given points be P(3, -1) and Q(4, - 2). Slope of PQ = -2 + 1 /4 - 3 = -1/1 = -1 = m₁ and slope of x-axis = 0 = m₂  Let θ be the required angle between given lines. So, tan θ = m₂ - m₁ /1 + m₁m₂ = 0 + 1/1 - 0 = 1 ⇒ tan θ = tan 45° ⇒ θ = 45° This question related to ChapRead more

    Choice (c) is correct.
    Let the given points be P(3, -1) and Q(4, – 2).
    Slope of PQ = -2 + 1 /4 – 3 = -1/1 = -1 = m₁
    and slope of x-axis = 0 = m₂ 
    Let θ be the required angle between given lines.
    So, tan θ = m₂ – m₁ /1 + m₁m₂ = 0 + 1/1 – 0 = 1
    ⇒ tan θ = tan 45° ⇒ θ = 45°
    This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-9

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    • 14
  5. Choice (b) is correct. Putting y = 0 in the equation, we get 3x = 15 i.e., x = 5 ⇒ Intercept on x-axis = 5  Putting x = 0 in the equation, we get 5y = 15 i.e., y = 3 ⇒ Intercept on y-axis = 3 This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer aRead more

    Choice (b) is correct.
    Putting y = 0 in the equation, we get 3x = 15 i.e., x = 5 ⇒ Intercept on x-axis = 5 
    Putting x = 0 in the equation, we get 5y = 15 i.e., y = 3 ⇒ Intercept on y-axis = 3
    This question related to Chapter 9 maths Class 11th NCERT. From the Chapter 9: Straight Lines. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-9

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    • 4