The problem asks: "What does the y-intercept represent?"

Looking at the graph and the context provided:

• The vertical axis (y-axis) represents the amount of money in Colby's savings account (in dollars).
• The horizontal axis (x-axis) represents time in years.

The y-intercept occurs where the graph crosses the y-axis. In this case, the graph starts at $100 on the y-axis when time (x) is 0. This represents the initial amount of money Colby put into the savings account.

Answer:

The y-intercept represents the initial amount of money that Colby put into the savings account, which is $100.

Would you like any further explanation on how