# Chapter 7 - Conic Sections - Exercise Set 7.3 - Page 699: 18

$y^2=36x$

#### Work Step by Step

Focus: $(9,0)$; Directrix: $(x=-9)$ $y^2=4px$ (parabola equation) $F(p,0)$ (focus formula) $x=-p$ (directrix formula) $F(9,0)$ $4(9)=36$ $y^2=36x$

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