Opposite of absolute value function (1 Viewer)

xFusion

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By opposite do you mean inverse?
If inverse, then you just exchange the x's and y's, then rearrange to make y the subject. i.e.
f(x) = -3 l x - 6 l + 2
x= -3 ly - 6 l +2
x = -3(y-6) +2
x=-3y +20
y=(20-x)/3 ---> f(x) = (20-x)/3
The other answer
f(x) = -3 l x - 6 l + 2
x= -3 ly - 6 l +2
x = 3(y-6) +2
x = 3y -16
y = (x+16)/3 ---> f(x) = (x+16)/3
 
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You're over thinking it, i thought he didn't want the inverse, just the signs reversed inside the absolute value lines.
 

Top Secret

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By opposite do you mean inverse?
If inverse, then you just exchange the x's and y's, then rearrange to make y the subject. i.e.
f(x) = -3 l x - 6 l + 2
x= -3 ly - 6 l +2
x = -3(y-6) +2
x=-3y +20
y=(20-x)/3 ---> f(x) = (20-x)/3
The other answer
f(x) = -3 l x - 6 l + 2
x= -3 ly - 6 l +2
x = 3(y-6) +2
x = 3y -16
y = (x+16)/3 ---> f(x) = (x+16)/3
Hey, take note that this was posted in the general maths section. lol
 

PC

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I think some people don't realise there's a specific "General Mathematics" course, and might mistake this section as a place for general enquiries ... if you know what I mean.
 

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