AM-2443

Parallel and perpendicular lines

A Math · Secondary 4 · Hard · Parallel and perpendicular lines

1. $k = \dfrac{13+\sqrt{249}}{10}$
2. $k = \dfrac{13-\sqrt{249}}{10}$
3. $k = \dfrac{5+\sqrt{249}}{10}$
4. $k = \dfrac{5-\sqrt{249}}{10}$

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