Question

Find the length of lines joining the following pairs of points: ( -1, -1 ) and ( 7,-3 )

Answer 1

Answer:

$\sqrt{(7 - ( - 1)) { }^{2} } + \sqrt{(( - 3) - ( - 1) }$

$\sqrt{8 {}^{2} } + \sqrt{( - 2) {}^{2} }$

$\sqrt{64 + 4}$

$\sqrt{68}$

$2 \sqrt{17}$