Their can be 7 groups hope this helps
Let m be the slope:
m=(y₂-y₁)/(x₂-x₁)
solve for c:
1/6=(9-c)/(1-7)
1/6=(9-c)/-6
-1=9-c
-10=-c
c=10
Answer:
13. She will have saved 1020 in 12 months and 467.5 in 11. 14. In 1 month she'll have saved 42.5 in 1 month and 212.5 in 5 months. 15. in 3 months she'll save 125 and 190 in 4 months. 16. The rate of change is 42.5. 17. It depends on your thoughts on what was more challenging, and knowing the rate of change can tell you half of certain amounts of money earned or what the difference between her earning months are. 18. I have no idea the y intercept someone else might be able to help you with that though. 19. I don't know that either someone else might help better.
Step-by-step explanation:
She originally had $400 in her bank account.
The 50w represents the amount she will put away each week.
