Question 22835
Not sure if this is what you want, but...
Looks like the Range difference is 48-3= 45
and the Domain difference is 2-(-4) = 6
Then 45/6 = 7 1/2
Can't imagine what you would be doing with 
those numbers but....
If I had to find the equation for this set of numbers
I would plot them on an x-y axis system.  Then if I 
had a calculator I would run some regression tests.
Hope you know how to proceed.

Cheers,
Stan H.