The slope at any point of the curve y = ...

The slope at any point of the curve `y = f(x)` is given by `(dy)/(dx)= 2x` it passes through `(1,-1)` then the equation of the curve is :

`y=x^(2)`

`y=x^(2)-2`

`y=x^(2)+1`

`y=x^(2)+2`

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