Increase and decrease equation, X and Y, with just this equation 20x+550=y

Question

Jina 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 Jina has been adding money. Suppose that x and y are related

 by the equation =+20x550y

.

Answer the questions below

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 is the change per week in the amount of money in the account?

$

What was the starting amount of money in the account?

$

Answer 1