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Help Me Please

 

Given A(-3,2)B(1,-4) answer the Question

 

Find The length of line AB. Round to the tenths place if needed.

 Dec 12, 2017
 #1
avatar+102422 
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Length   =

 

sqrt   [   ( subtract x coordinates)^2  + (subtract y coordinates )^2  ]  =

 

[BTW...the order in which the coordinates are subtracted makes no difference ]

 

sqrt  [ ( -3 - 1)^2  +  ( - 4 - 2)^2 ]  =

 

sqrt [  (-4)^2 + (-6)^2 ]  =

 

sqrt [ 16  +  36 ] =

 

sqrt  [ 52 ] =

 

sqrt   [  4 * 13  ] =

 

sqrt [ 4 ] * sqrt [ 13 ]  =

 

2*sqrt [ 13]

 

 

cool cool cool

 Dec 12, 2017

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