Charlie opened a savings account. The graph models the linear relationship between the amount of money remaining in Charlie’s account and the number of weeks that have passed.
Write the function that best represents the relationship.
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Let's say the amount of money in Charlie's account is represented by the variable A and the number of weeks that have passed is represented by the variable W.
Considering that it's a linear relationship, we can write the function as:
A(W) = mW + b
Where m is the slope (rate of change) and b is the y-intercept (initial amount).
To determine the function, we need to know the y-intercept and the rate of change from the graph provided. The y-intercept is the initial amount in the account (amount at week 0) and the rate of change will give us how much money is added or subtracted from the account each week.
Please provide the numerical values for the y-intercept and the slope from the graph so we can write the function.