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Distance from a point to a line

Exercise and reference answers

Questions
  1. Hint
    |Ah + Bk + C| ÷ √(A²+B²)
    Unit
    units
    Answer
    3
    Question
    Distance from (−2, −3) to 12x + 16y + 12 = 0
  2. Hint
    √(g² + f² − c)
    Unit
    units
    Answer
    9
    Question
    Radius of x² + y² + 4x + 6y − 68 = 0
Instructions
Work it out and key in the answer.
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