Need help to finish my homework

[ArmiAldi]

Need answers for 2 questions please:

1.) Find the equation of the line tangent to the curve at the point.

xy + y = 2 ; (1,1)

2.) Evaluate dy/dt for the function at the point

xy^2 = 4 dx/dt = -5 x = 4, y = 1

Thank You

 

[Baggio]

May I direct your attention to : https://www.physicsforums.com/showthread.php?t=44101

 

[kkrizka]

You need to show us an attempt at a solution before we can help you. But I'll tell you that you need implicit differentiation for this.