Find the Slope of the Tangent Line to the Curve $x ^ { 2 } + 3 x y - y ^ { 2 } = 3$

Multiple Choice

Find the slope of the tangent line to the curve $x ^ { 2 } + 3 x y - y ^ { 2 } = 3$ at the point (1, 1) .

A) 1
B) 3
C) 5
D) -5