This video lecture from Conic Sections (F.Sc. second year Mathematics) covers: Question number 2-3 of exercise 6.9. In these questions we show that the given equations represent a pair of straight lines and find an equation of each line. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.