The equation y = 350x + 480 describes the amount of money in Blake’s savings account, where y is the amount of money in his account and x is the number of monthly deposits he makes. Eddie also has a savings account, and the balances in his account are recorded in the table.

How much money did each account start with?

Number of Monthly Deposits 1 2 4 7
Balance ($) 900 1375 2325 3750

Blake’s account started with $
.
Eddie’s account started with $
.

Question

The equation y = 350x + 480 describes the amount of money in Blake’s savings account, where y is the amount of money in his account and x is the number of monthly deposits he makes. Eddie also has a savings account, and the balances in his account are recorded in the table.
 
How much money did each account start with?
 
Number of Monthly Deposits	1	2	4	7
Balance ($)	                    900 1375 2325  3750
 
Blake’s account started with $  
 .
Eddie’s account started with $  
 .

anonymous · Answer

Eddie: 579? 
Blake: 357?

texaschic101 · Answer

blake started with 480

(1,900) (2,1375)
slope = (1375 - 900) / (2 - 1)
slope = 475

y = mx + b
900 = 475(1) + b
900 = 475 + b
900 - 475 = b
425 = b

y = 475x + 425

and Eddie started with 425

anonymous · Answer

Thank you @texaschic101 :) i will be sure to read it and learn how to do it. I hate it when people give direct answers because you dont learn anything. You are one of the few that give the explenation :)

texaschic101 · Answer

basically, what they started with is your y intercept....

Blake started with 480 and added 350 each month

Eddie started with 425 and added 475 each month

anonymous · Answer

:) thanks it helped alot