Question
Question: The general equation of 2nd degree 9x<sup>2</sup> –24xy + 16y<sup>2</sup> – 20x –15y – 60 = 0 repre...
The general equation of 2nd degree
9x2 –24xy + 16y2 – 20x –15y – 60 = 0 represents
A
Pair of st. lines
B
Parabola
C
Ellipse
D
Hyperbola
Answer
Parabola
Explanation
Solution
As h = –12 a = 9 b = 16
h2 = ab
Ю (–12)2 = 9.16
(–12)2 = 144 so it is parabola.