Question 839936
The midpoint is the average of x and y values.
{{{x[m]=(2+(-6))/2=-4/2=-2}}}
{{{y[m]=(2+(-2))/2=0/2=0}}}

.
.
.
{{{drawing(300,300,-8,8,-8,8,grid(1),circle(2,2,0.25),circle(-6,-2,0.25),circle(-2,0,0.25),
circle(-2,0,0.15),
circle(-2,0,0.05),
circle(-2,0,0.20),
line(2,2,-6,-2))}}}