math nerds

i need help with a formula in my program and i feel stupid.

if 50 = 1000 and 250 = 0

what is the formula to take any number between 50 and 250 and give it a value from 1000 to 0?

 

y = a*x + b, where a = (y2 - y1) / (x2 - x1) and b = y2 - a*x2

so based on what u typed (I think):
a = (0 - 1000) / (250 - 50) = -5
b = 0 - (-5 * 250) = 1250

 

So with Y = -5*X + 1250
when X=50, Y=-5*50 + 1250 = 1000 Check
when X=250, Y=-5*250 + 1250 = 0 Check
Good equation

 

200/1000=.2
Therefore 50=1000
50.2=999
50.4=998
And so on...

 

im lazy so i just went with Score = (1000 / X) * 50. Its measured in milliseconds, seems to work just fine.

Behold! sicc's garage punching machine. bring on the sprained wrists!

 

42

 

I have a masters in engineering and my brain so fried today that made it hurt. I cannot do basic math today.

 

tell me about it.... we had a department/company dinner last night, my head hurts so bad that even reading this is making me dizzy.

 

This thread should probably be deleted before metalhead gets seriously hurt.

 

That might be fun to watch though.

Note the OP only defined a range of x for the linear relationship to hold, so the the proper form of the equation is
For x = 50 to 250, then y= 1250 -5x.

Did that put Metalhead in the ditch?

 

Y=-5x+1250

 

What if you do not want a linear relationship? You know so you can look more manly depending on your needs....

 

What is going on here?

 

ud need another point to define how non-linear. or u could just make it up.

 

For all we know its a Sinusoidal function with an amplitude of 1000 and just so happens to cross 0 at 250.