Looking for an equation

[Earl321]

Imagine a number line from 1 to 7.
I'm looking for an equation where it returns a value that is on the opposite end of the number line.

if I input 1, it returns 7,
if I input 2, it returns 6,
if I input 7, it returns 1,
etc.

 

[pka]

[imath]P(n)=-n+8[/imath].

 

[Earl321]

[imath]P(n)=-n+8[/imath].

Thank you so much!

 

[Steven G]

Did you notice that the sum of your pairs add up to 8?

I would use the equation x+y = 8 or y = 8-x. This is exactly what pka wrote.

 

[jonah2.0]

Beer soaked ramblings follow.

Thank you so much!

You could also play a game of connect the dots.

Earl321 Looking for an equation

www.desmos.com

 

[Steven G]

Beer soaked ramblings follow.

You could also play a game of connect the dots.

Earl321 Looking for an equation

www.desmos.com

You're still playing that game?

 

[Deleted member 4993]

Imagine a number line from 1 to 7.
I'm looking for an equation where it returns a value that is on the opposite end of the number line.

if I input 1, it returns 7,
if I input 2, it returns 6,
if I input 7, it returns 1,
etc.

Input + Return = 8

Return = 8 - Input