Which of the following statements best describes the effect of replacing the graph of y = f(x) with the graph of y = f(x) − 9? \
the graph of y = f(x) will shift up 9 units.
the graph of y = f(x) will shift down 9 units.
the graph of y = f(x) will shift left 9 units.
the graph of y = f(x) will shift right 9 units.

The graph of y = f(x) will shift down 9 units.

Step-by-step explanation:

With the graph of y = f(x)-9  the graph of y=f(x) will shift down 9 units. For example:

if f(0) = 0, then y = f(0) -9 = -9.

if f(1) = 9, then y= f(1) - 9 = 9-9 = 0.

The same proccess with all x in the domain of f(x).

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step-by-step explanation:

it has changed from the width and the height.

step-by-step explanation: