Question

The point on the parabola $y ^ { 2 } = 18 x$ , for which the ordinate is three times the abscissa, is

• A. (6, 2)
• B. (–2, –6)
• C. (3, 18)
• D. (2, 6)

Answer 1

Answer: (D)

(2, 6)

Answer 2

Given $( 3 x ) ^ { 2 } = 18 x$⇒ $9 x ^ { 2 } = 18 x$ ⇒ $x = 2$ and $y = 6$