The diagram shows a sketch of the curve $$\(y=x^{2}+3 x-4\)$$. Find the coordinates of the points $$\(A, B\)$$ and $$\(C\)$$. $$\[ \begin{aligned} & A(\ldots \ldots \ldots \ldots, \ldots \ldots \ldots \ldots .) \\ & B(\ldots \ldots \ldots \ldots, \ldots \ldots \ldots \ldots .) \\ & C(\ldots \ldots \ldots \ldots, \ldots \ldots \ldots \ldots .) \end{aligned} \]$$

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