If you have the plot of the function f(x),
then the plot of the function g(x) = f(-x) is obtained by the mirror reflection about y-axis.
It is ALL that you need to know about such transformations.
Solved, answered and explained.
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Regarding the last line in your post
points(-2,0),(0,2),(3,-1).
please note that this fragment is incomplete sentence, not connected with the rest of the post.
It does not contain a question and is not a completed phrase in English, so its meaning is DARK.
Avoid using such nonsensical passages in your post . . .