Precalculus chapter 1

Mathematics
Tutor: None Selected Time limit: 1 Day

May 13th, 2015

Inverse of f(x)= (x+4)/5...............................

May 13th, 2015

This is how you go about it:

ley f(x) be y therefore the equation will be y=5x-4

switch x for y , the equation will be x=5y-4

divide both sides by 5........ x/5=y-4/5

therefore, x/5+4/5=y...............hence y=x/5+4/5

y=(x+4)/5

the inverse of f(x)=(x+4)/5



May 13th, 2015

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