Question: In Problems 2226, (a) Graph each quadratic function by determining whether its graph is concave up or concave down and by finding its vertex, axis

In Problems 22–26,

(a) Graph each quadratic function by determining whether its graph is concave up or concave down and by finding its vertex, axis of symmetry, y-intercept, and x-intercepts, if any.

(b) Determine the domain and the range of the function.

(c) Determine where the function is increasing and where it is decreasing.

f (x) = −4x2 + 4x

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