coming up with a single expression

Hello, ok, so i have 2 columns like this:

x and y
1 100
2 75
3 50
4 25

Can someone come up with a single mathematical expression that relates x and y like y=...... ?

Quote:

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Originally Posted by Octavarium

Hello, ok, so i have 2 columns like this:

x and y
1 100
2 75
3 50
4 25

Can someone come up with a single mathematical expression that relates x and y like y=...... ?

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^ that doesn't work out...i actually wenthere Equation Generator punched in my numbers and it turns out to be y= -25x +125

Quote:

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Originally Posted by Octavarium

^ that doesn't work out...i actually wenthere Equation Generator punched in my numbers and it turns out to be y= -25x +125

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I meant to write

Ah...thanks !