Josie is saving money to purchase a new pair of shoes. She has already saved $5 and earn $0.50 for each chore she completes. Graph the relationship between number of chores Josie completes and the total amount she will have saved. What part of Josie's scenario represents the slope of the line you graphed? What part of Josie's scenario represents the y-intercept of the line you graphed?​

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.