The slope is -3. Finding slope can be easy if you just remember that the formula is set up as y=mx+b. The number in the 'm' place is always the slope. Example: y=4x+1, the slope would be 4 because it's in the 'm' place. If you have trouble remembering which place the slope is, trying thinking about skiing or sledding; you can only sled or ski down a Mountain slope. Mountain starts with M. M=slope. Hope this helps :) If you have any questions, just let me know!
It is important because if you are adding and subtracfing and the decimals are off when your done with the equation you might end up with two decimals or numbers in the wrong place
