9.
\((1)\)若抛物线\({{y}^{2}}=2px\left( p > 0 \right)\)的准线经过椭圆\(\dfrac{{{x}^{2}}}{9}+\dfrac{{{y}^{2}}}{5}=1\)的一个焦点,则该抛物线的准线方程为___________.
\((2)\)一动圆\(P\)过定点\(M(-4,0)\),且与已知圆\(N\):\((x-4)^{2}+y^{2}=16\)相切,则动圆圆心\(P\)的轨迹方程是__________
\((3)\)抛物线\({{{y}}^{2}}{=x}\)上的点到直线\(x-2y+4=0\)的距离最小的点的坐标是________.
\((4)\)曲线\(y=2{{x}^{2}}\)上两点\(A({x}_{1},{y}_{1}),B({x}_{2},{y}_{2}) \)关于直线\(y=x+m\)对称,\({{x}_{1}}\cdot {{x}_{2}}=-\dfrac{1}{2}\),则\(m\)的值为__________.