Solve the Problem $9 y^{2}-x^{2}=7$ , Where $x$ And $y$ Are in Meters $h$

Multiple Choice

Solve the problem. Round your answer to the nearest tenth.
-The roof of a building is in the shape of the hyperbola $9 y^{2}-x^{2}=7$ , where $x$ and $y$ are in meters. Refer to the figure and determine the height, $h$ , of the outside walls.

A) $16.0 \mathrm{~m}$
B) $1.8 \mathrm{~m}$
C) $1.3 \mathrm{~m}$
D) $4.0 \mathrm{~m}$