SELECT "Regional County Municipality (RCM)" FROM table_73311 WHERE "Density (pop. per km2)" = '9.7'
What is the RCM that has a density of 9.7?
CREATE TABLE table_73311 (
    "Regional County Municipality (RCM)" text,
    "Population Canada 2011 Census" real,
    "Land Area" text,
    "Density (pop. per km2)" text,
    "Seat of RCM" text
)