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