Question 940646
{{{y = 6 }}}=> horizontal line
{{{x = -2}}}=> vertical line

so, lines are perpendicular


{{{drawing( 600, 600, -10, 10, -10, 10,blue(line(-2,10,-2,-10)), graph( 600, 600, -10, 10, -10, 10, 6,6)) }}}