Question 388527
  <pre><font size = 3 color = "indigo"><b>
Hi,         
equations for the vertical and horizontal lines passing through the point (9,7)
  x = 9 (blue) and y = 7
{{{drawing(300,300,-10,10,-10,10,blue(line(9,10,9,-10)),grid(1),circle(9, 7,0.4),graph(300,300,-10,10,-10,10, 7))}}}