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Class 11

Slope and the Angle Between Lines, Quiz

Five questions on slope, collinearity and the angle between lines. Pick one answer for each.

5 questions, one mark each. 3 to pass. Suggested time: 10 minutes. Your answers are not recorded.

  1. Find the slope of the line through (1,4)(1, 4) and (3,−2)(3, -2).
  2. A line has inclination 60∘60^\circ. What is its slope?
  3. Two lines have slopes 22 and −12\displaystyle -\tfrac{1}{2}. They are
  4. The points (1,2)(1, 2), (3,8)(3, 8) and (k,11)(k, 11) are collinear. Find kk.
  5. Find the acute angle between lines of slopes 12\displaystyle \tfrac{1}{2} and 33.
Unanswered questions are marked wrong.

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