conic-section

Question: If the parabola ${{y}^{2}}=4ax$ passes through the point (1, –2), then the tangent at this point is

1) $x+y-1=0$

2) $x-y-1=0$

3) $x+y+1=0$

4) $x-y+1=0$

Solution:

Explanation: No Explanation

Parabola

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