QUESTIONS AND SOLUTIONS
PART 3
On the plane \(xy\), there are two straight lines (1) and (2), two parabolas (3) and (4) and a circle (5) as shown in a lower figure. Choose the correct equation from (1) to (10) to satisfy each graph and fill in the blank with the number.
(1) \(x + 3y + 6 = 0\)
(2) \(4x – y – 4 = 0\)
(3) \(x^2 + 4x + y^2 + 4y + 4 = 0\)
(4) \(5x^2 – 30y + 8x + 60 = 0\)
(5) \(x – 3y + 6 = 0\)
(6) \(x^2 + y + 4x + 4 = 0\)
(7) \(x^2 – 4x + y^2 – 4y + 4 = 0\)
(8) \(5x^2 – 30y – 8x – 60 = 0\)
(9) \(2x – y – 4 = 0\)
(10) \(x^2 + y – 4x – 4 = 0\)
(11) \(x^2 – 4x – y^2 – 4y + 4 = 0\)
(12) \(x – 3y – 6 = 0\)
(13) \(5x^2 – 30y – 8x + 60 = 0\)
(14) \(2x + y + 4 = 0\)
(15) \(x^2 + y – 4x+ 4 = 0\)
