Question

find the distance between (0,0) and (-2,-2).round that to the nearest tenth

Answer 1

magintude?
sqrt(2^2+2^2)
sqrt(8) ... 2.8.. i guess.. weirdly worded question

Answer 2

\[Distance = \sqrt{\Delta y^2 + \Delta x^2}\]
\[Distance = \sqrt{(0-(-2))^2+(0-(-2))^2}\]
\[Distance = \sqrt{(2)^2+(2)^2}\]
\[Distance = \sqrt{4+4}\]
\[Distance = \sqrt{8}=\sqrt{2*4}=2\sqrt{2}=2.8\]