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CBSE Maths · Class 9

Chapter 13: Two Variables, One Line

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Linear equations in two variables — infinite solutions, one straight-line graph.

Questions

  1. Is (0,5)(0, 5) a solution of x+y=5x + y = 5?
  2. Slope of y=−2x+4y = -2x + 4.
  3. Y-intercept of 2x+y=62x + y = 6 (rearrange to slope-intercept).
  4. Give any 2 solutions of x−y=3x - y = 3.
  5. Line through (0,0)(0,0) with slope 11?
  6. Is x=4x = 4 a horizontal or a vertical line?
  7. Slope of the line through (−1,3)(-1, 3) and (2,−3)(2, -3).

Extra Practice (Optional)

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Answer Key (For Teachers)

  1. Answer: Yes
    Working: 0+5=50+5=5.
  2. Answer: −2-2
    Working: Coefficient of xx.
  3. Answer: 66
    Working: y=−2x+6y = -2x + 6.
  4. Answer: (3,0),(5,2)(3,0), (5,2)
    Working: Pick xx, solve for yy.
  5. Answer: y=xy = x
    Working: y=xy = x.
  6. Answer: Vertical
    Working: No yy.
  7. Answer: −2-2
    Working: (−3−3)/(2+1)(-3-3)/(2+1).
Gyaan Maths · CBSE Class 9 · Chapter 13
Gyaan Maths — CBSE Class 6-12, built for board-toppers.
v1.1 · Sept 2026