CBSE  /  Class 11  /  Maths  /  Straight Lines

  • 1. 
    The locus of a point, whose abscissa and ordinate are always equal is

  • x + y + 1 = 0
  • x – y = 0
  • x + y = 1
  • none of these.

  • 2. 
    The equation of straight line passing through the point (1, 2) and parallel to the line y = 3x + 1 is

  • y + 2 = x + 1
  • y + 2 = 3 × (x + 1)
  • y – 2 = 3 × (x – 1)
  • y – 2 = x – 1

  • 3. 
    What can be said regarding if a line if its slope is negative

  • θ is an acute angle
  • θ is an obtuse angle
  • Either the line is x-axis or it is parallel to the x-axis.
  • None of these

  • 4. 
    The equation of the line which cuts off equal and positive intercepts from the axes and passes through the point (α, β) is

  • x + y = α + β
  • x + y = α
  • x + y = β
  • None of these

  • 5. 
    Two lines a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 are coincedent if

  • a1/a2 = b1/b2 ≠ c1/c2
  • a1/a2 ≠ b1/b2 = c1/c2
  • a1/a2 ≠ b1/b2 ≠ c1/c2
  • a1/a2 = b1/b2 = c1/c2

  • 6. 
    The equation of the line passing through the point (2, 3) with slope 2 is

  • 2x + y - 1 = 0
  • 2x - y + 1 = 0
  • 2x - y - 1 = 0
  • 2x + y + 1 = 0

  • 7. 
    The slope of the line ax + by + c = 0 is

  • a/b
  • -a/b
  • -c/b
  • c/b

  • 8. 
    Equation of the line passing through (0, 0) and slope m is

  • y = mx + c
  • x = my + c
  • y = mx
  • x = my

  • 9. 
    The angle between the lines x - 2y = y and y - 2x = 5 is

  • tan-1 (1/4)
  • tan-1 (3/5)
  • tan-1 (5/4)
  • tan-1 (2/3)

  • 10. 
    Two lines a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 are parallel if

  • a1/a2 = b1/b2 ≠ c1/c2
  • a1/a2 ≠ b1/b2 = c1/c2
  • a1/a2 ≠ b1/b2 ≠ c1/c2
  • a1/a2 = b1/b2 = c1/c2
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