# coming up with a single expression

• April 7th 2008, 05:46 PM
Octavarium
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=...... ?
• April 7th 2008, 05:51 PM
Mathstud28
Yes
Quote:

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=...... ?

$y=125-x$
• April 7th 2008, 05:57 PM
Octavarium
^ that doesn't work out...i actually wenthere Equation Generator punched in my numbers and it turns out to be y= -25x +125
• April 7th 2008, 05:59 PM
Mathstud28
O silly me
Quote:

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

I meant to write $y=125-25x$
• April 7th 2008, 06:01 PM
Octavarium
Ah...thanks !