Factor y=x2+4x12\displaystyle {y}={x}^{{2}}+{4}{x}-{12} :  
Identify the vertex:  
Identify the y-intercept:  
Graph y=x2+4x12\displaystyle {y}={x}^{{2}}+{4}{x}-{12} and the parent function

Clear All Draw: Parabola

Looking at the graph, what are the x-intercepts of y=x2+4x12\displaystyle {y}={x}^{{2}}+{4}{x}-{12} :