Finding Horizontal Intercepts of Quadratic Functions. Graphing/Intersection Method
1) Write the Vertical Intercept as an Ordered Pair

 f(x)=x2−4x+4\displaystyle {f{{\left({x}\right)}}}={x}^{{2}}-{4}{x}+{4}

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Clear All Draw: Parabola
2) Write the Vertex as an Ordered Pair

3) Draw the function neatly on the graph using the poly tool by plotting the vertex and vertical intercept.
4) Use your graphing calculator to determine the horizontal intercept(s) of f(x)=x2−4x+4\displaystyle {f{{\left({x}\right)}}}={x}^{{2}}-{4}{x}+{4}. Write your answers as ordered pairs separated by commas. If none exist, write DNE.

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