Question 176638
D= the square root of the difference of the x coordinates squared + the difference of the y coordinates squared
:
{{{D=sqrt((x[2]-x[1])^2+(y[2]-y[1])^2)}}}
:
so
:
{{{D=sqrt((-5-(-1))^2+(-7-(-4))^2)}}}
:
{{{D=sqrt((-4)^2+(-3)^2)}}}
:
{{{D=sqrt(25)}}}
:
{{{highlight(D=5)}}}