Question 902702
x = 6, Vertical Line
(6,0) and (6,6) two points on this Line
{{{drawing(300,300,   -10,10,-10,10,  blue(line(6,10,6,-10))  ,  
 grid(1),
circle(6, 6,0.4),
circle(6, 0,0.4),
graph( 300, 300, -10,10,-10,10))}}}