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 $
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blake started with 480
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
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