Mathematics
Grade9
Easy

Question

Find the distance between (-1, -2) and (-9, 4).

  1. 7
  2. 8
  3. 9
  4. 10

hintHint:

If there are two points left parenthesis x subscript 1 comma y subscript 1 right parenthesis and left parenthesis x subscript 2 comma y subscript 2 right parenthesis ,then distance between two points is 

Error converting from MathML to accessible text.

The correct answer is: 10


    If there are two points left parenthesis x subscript 1 comma y subscript 1 right parenthesis and left parenthesis x subscript 2 comma y subscript 2 right parenthesis ,then distance between two points is 

    Error converting from MathML to accessible text.
    Distance between (-1, -2) and (-9, 4) =  square root of left parenthesis negative 9 plus 1 right parenthesis squared plus left parenthesis 4 plus 2 right parenthesis squared end root
    equals square root of 8 squared plus 6 squared end root
equals square root of 64 plus 36 end root
equals square root of 100
equals 10
    Therefore, Distance between (-1, -2) and (-9, 4) is 10.

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