Answer:
(-12,0)
Step-by-step explanation:
(-12,0)
(-4,2)
Answer:

P.S. If u want a numerical value for 'f' , now put the value of 'm'
Answer:
Step-by-step explanation:
- When 1 gallon is has been used 400 square feet of the wall will be paint
- The unit rate is 400 square feet per gallon
Put it in a decimal then divide