Question 1190826
.


Such formulation "Horizontal compression by the factor of 1/5" is not used in Math and does not work.


The term "horizontal compression of the plot" is used with the factor greater or equal to 1, ONLY.



See these internet sources


https://www.storyofmathematics.com/horizontal-compression#:~:text=Horizontal%20compression%20depends%20on%20the,may%20have%20a%20different%20domain.


https://courses.lumenlearning.com/waymakercollegealgebra/chapter/compressions-and-stretches/


https://study.com/learn/lesson/vertical-horizontal-stretch-compression-function.html


where these terms are discussed in very detailed manner.