Given the polar curve $~r=3\cos(2\theta)~$ for $~\theta \in \left[ 0,2\pi \right)\,$, determine which of the following lines are tangent to the curve at the pole (the origin). Line equation|Yes or No :-:|:-: $y=x$|[[☃ dropdown 6]] $y=2x$|[[☃ dropdown 7]] $y=-x$|[[☃ dropdown 8]] $y=-2x$|[[☃ dropdown 9]] $y=0$|[[☃ dropdown 10]]