f(x) map onto itself means f(x) = x
the image is the same as the object
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Any function or object that has symmetry about the y-axis can be mapped onto itself by a horizontal translation. This means that if the function or object is shifted horizontally by any distance, it will still look the same.
No, not every relation is a function. In order for a relation to be a function, each input value must map to exactly one output value. If any input value maps to multiple output values, the relation is not a function.
A virus carries out the function of replication, by hijacking the host cell's machinery to make copies of itself.
The body repairs itself while a person sleeps.
remove the toxins and wastes from the body that can interfere with normal body function