A point on the parabola ${y^2} = 18x$ at which the ordinate increases at twice the rate of the abscissa is

Question

$\left( {{9 \over 8},{9 \over 2}} \right)$

$(2, -4)$

$\left( {{-9 \over 8},{9 \over 2}} \right)$

$(2, 4)$

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