Maths-
General
Easy

Question

Find the distance between (-1,4) and (3 ,7)

  1. 9 units
  2. 18 units
  3. 5 units
  4. 15 units

The correct answer is: 5 units


    On comparing (-1,4) and (3,7) with coordinates points (x1,y1 ) and (x2,y2 ) respectively we have,
    x1=-1;   y1=4
    x2=3;    y2=4
    Distance between two points square root of open parentheses x subscript 2 minus x subscript 1 close parentheses squared plus open parentheses y subscript 2 minus y subscript 1 close parentheses squared end root
    not stretchy rightwards double arrow square root of left parenthesis 3 minus left parenthesis negative 1 right parenthesis right parenthesis squared plus left parenthesis 7 minus 4 right parenthesis squared end root
not stretchy rightwards double arrow square root of left parenthesis 4 right parenthesis squared plus left parenthesis 3 right parenthesis squared end root
not stretchy rightwards double arrow square root of 16 plus 9 end root space space space space space space space space space space space space space space space space space space space space space space space space space space space space open parentheses table attributes columnalign left columnspacing 1em end attributes row cell 4 squared equals 4 cross times 4 equals 16 end cell row cell 3 squared equals 3 cross times 3 equals 9 end cell end table close parentheses
not stretchy rightwards double arrow square root of 25
    = 5 units

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