



 
Hi Christy, You mentioned implicit differentiation and that is what you should be using. In the given expression
think of y as a function of x and find y'. If you differentiate both sides with respect to x you get
or
Substitute for x and y at the given point (1, 1) and solve for y'. The tangent line is then the line through (1, 1) with slope y' at (1, 1). I hope this helps,  


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