Question 230761
Hi, 
The equation for slope intercept is:

                   y = mx + b

Since you know the slope, replace m with 4.5 and you have the y intercept at -6 which will replace b, therefore:

                   y = 4.5x - 6 

RJ Toftness 
Author of "Unlock the Mystery to Math"
www.math-unlock.com