SOLUTION: Keiko is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Keiko has been adding mon

Question 1088736: Keiko is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Keiko has been adding money. Suppose that x and y are related by the equation =20x+550=y

Note that a change can be an increase or a decrease.
For an increase, use a positive number. For a decrease, use a negative number.
What was the starting amount of money in the account?
What is the change per week in the amount of money in the account?

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

or
compare to slope intercept form of linear equation:
where is a slope (rate of change) and is y-intercept ( value of when )
so, in your case rate of change
if ,a change will increase,if a change will decrease
in your case a change will increase, and in case you have a change will decrease
What was the starting amount of money in the account?
y-intercept shows you starting amount, and in your case it is

What is the change per week in the amount of money in the account?
it is a slope; so,

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