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Question
Find the distance between the points
(ii) A(7,-4)and B(-5,1)
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Solution
A(7,-4)and B(-5,1)
The given points are A(7,-4)and B(-5,1)
`Then ,(x_1 =7, y_1 = -4) and (x_2 =-5 , y_2=1)`
`AB = sqrt((x_2-x_1)^2 +(y_2 - y_1)^2)`
`= sqrt((-5-7)^2 + {1-(-4)}^2)`
`=sqrt((-5-7)^2 +(1+4)^2)`
`=sqrt((-12)^2+(5)^2)`
`= sqrt(144+25)`
`=sqrt(169)`
=13 units
`= sqrt(144+25)`
`=sqrt(169)`
=13 units
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