Recognize Quadratic Function: To find the minimum value of the function y=(x−5)2, we need to recognize that this is a quadratic function in the form of y=a(x−h)2+k, where (h,k) is the vertex of the parabola. Since a is positive (a=1), the parabola opens upwards, and the vertex represents the minimum point of the function.
Find Vertex Coordinates: The vertex of the parabola is given by the point (h,k). In the function y=(x−5)2, h=5 and k=0, because the function can be rewritten as y=1∗(x−5)2+0. Therefore, the vertex is at the point (5,0).
Determine Minimum Value: Since the vertex (5,0) represents the lowest point on the graph of the function y=(x−5)2, the minimum value of y is the y-coordinate of the vertex. Therefore, the minimum value of y is 0.
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