SOLUTION: 1.) Sales last month were 4000.00, this month they were 5000.00. Write an equation that shows this using y for sales and x for the month. (this month x=0, last month x=-1, next mo
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Question 53805: 1.) Sales last month were 4000.00, this month they were 5000.00. Write an equation that shows this using y for sales and x for the month. (this month x=0, last month x=-1, next month x=1 etc... 2.) What will the sales be 4 months from now?
Can someone show me how to work this? Thanks. Answer by Nate(3500) (Show Source):
You can put this solution on YOUR website! (month time,amount from sales)
Points: (-1,4000) and (0,5000)
M = (y2 - y1)/(x2 - x1) = (4000 - 5000)/(-1 - 0) = -1000/-1 = 1000
y - y1 = m(x - x1)
y - 5000 = 1000(x - 0)
y - 5000 = 1000x
y = 1000x + 5000
In 4 months (x = 4), the amount will be 9000.00
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