taiwan-gsat 2025 Q4

taiwan-gsat · Other · ast__math-a 8 marks Conic sections Conic Identification and Conceptual Properties

From the following conic sections on the coordinate plane, select the options that intersect all vertical lines.
(1) $\frac{x^{2}}{9} + \frac{y^{2}}{4} = 1$
(2) $\frac{x^{2}}{9} - \frac{y^{2}}{4} = 1$
(3) $-\frac{x^{2}}{9} + \frac{y^{2}}{4} = 1$
(4) $y = \frac{4}{9}x^{2}$
(5) $x = \frac{4}{9}y^{2}$

From the following conic sections on the coordinate plane, select the options that intersect all vertical lines.

(1) $\frac{x^{2}}{9} + \frac{y^{2}}{4} = 1$

(2) $\frac{x^{2}}{9} - \frac{y^{2}}{4} = 1$

(3) $-\frac{x^{2}}{9} + \frac{y^{2}}{4} = 1$

(4) $y = \frac{4}{9}x^{2}$

(5) $x = \frac{4}{9}y^{2}$

Paper Questions

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