If f(x) is an even function, which statement about the graph of f(x) must be true?
-it has rotational symmetry about the origin.
-it has line symmetry about the line y = x.
-it has line symmetry about the y-axis.
-it has line symmetry about the x-axis

An even function f(x) has the below mentioned property.

It means that when we replace x with -x then there is no change in the original function.

In other words, the graph of the even function has mirror image about the y axis.

Hence, from the given options, option C is the correct option.

Therefore, the correct statement should be

It has line symmetry about the y-axis

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step-by-step explanation:

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i would need to see the dot plot : )