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# Graph reflections? watch

1. say you wanted to reflect the function f(x) in the y axis, would you do -f(x). say you wanted reflection of this in the x axis, would you do f(-x)? and also, if you wanted the equation of the graph, would you just plug in -xto wherever x is for the refelction in the x axis and times the whole thing by -1 for a reflection in the y axis? thanks.
2. (Original post by Bertybassett)
say you wanted to reflect the function f(x) in the y axis, would you do -f(x). say you wanted reflection of this in the x axis, would you do f(-x)? and also, if you wanted the equation of the graph, would you just plug in -xto wherever x is for the refelction in the x axis and times the whole thing by -1 for a reflection in the y axis? thanks.
Everything you said is right
3. (Original post by Bertybassett)
say you wanted to reflect the function f(x) in the y axis, would you do -f(x). say you wanted reflection of this in the x axis, would you do f(-x)? and also, if you wanted the equation of the graph, would you just plug in -xto wherever x is for the refelction in the x axis and times the whole thing by -1 for a reflection in the y axis? thanks.
Every time you say x-axis, or y-axis, swap them around then the whole post will be correct.
4. (Original post by Bertybassett)
say you wanted to reflect the function f(x) in the y axis, would you do -f(x). say you wanted reflection of this in the x axis, would you do f(-x)? and also, if you wanted the equation of the graph, would you just plug in -xto wherever x is for the refelction in the x axis and times the whole thing by -1 for a reflection in the y axis? thanks.
to reflect in the y-axis you do f(-x) and to reflect in the x-axis you do -f(x)
5. (Original post by RDKGames)
Every time you say x-axis, or y-axis, swap them around then the whole post will be correct.
what do you mean? so a reflection in the y axis is f(-x) and in the x axis it's -f(x)???
6. (Original post by Bertybassett)
what do you mean? so a reflection in the y axis is f(-x) and in the x axis it's -f(x)???
Yes.

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