If `y+a=m_(1)(x+3a),y+a=m_(2)(x+3a)` are two tangents to the parabola `y^(2)=4ax`, then

If y+b=m_(1)(x+a) and y+b=m_(2)(x+a) are two tangents to the paraabola y^(2)=4ax then

5.If y+3=m_(1)(x+2) and y+3=m_(2)(x+2) are two tangents to the parabola y^(2)=8x, then

If the line (y-b)=m_(1)(x+a) and (y-b)=m_(2)(x+a) are the tangents to the parabola y^(2)=4ax then

If y+b=m_1(x+a) and y+b=m_2(x+a) are two tangents to the paraabola y^2=4ax then

If y+b=m_1(x+a)& y+b=m_2(x+a) are two tangents to the parabola y^2=4ax then |m_1m_2| is equal to:

If y+3=m_1(x+2) and y+3=m_2(x+2) are two tangents to the parabola y^2=8x , then

If y+3=m_1(x+2) and y+3=m_2(x+2) are two tangents to the parabola y^2=8x , then (a) m_1+m_2=0 (b) m_1.m_2=-1 (c) m_1+m_2=1 (d) none of these