Two parabolas have the same focus

MATHEMATICS · Single correct · CBSE · Mathematics · Conic Sections · Conic Sections

Problem

Two parabolas have the same focus. If their directrices are the

x

-axis and the

y

-axis, respectively, then the slope of their common chord is: (1)

\pm1

(2)

\frac{4}{3}

(3)

\frac{3}{4}

(4) None of these