If y+3=m1(x+2) and y+3=m2(x+2) are two...

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

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