Answer:

Step-by-step explanation:
Your Welcome!
The slope would be 0
This is basically how you do it if you need more help let me know
This is the work and the answer is 4/23 or (in decimal form) 0.17391304
You could use the equation
+4+(-4)=0 if:
-you earn $4 and spend it
-buying 4 candy bars then eating them
-earning 4 points then losing them