Describe the error in interpreting the slope in the context of the situation.

A note marked wrong shows a line graph titled Savings Account is shown. The vertical axis shows Balance in dollars extends from 0 to 200 in increments of 20. The horizontal axis shows Year from 0 to 8 in increments of 2. The straight line passes through the points at ordered pair 0 comma 100 and 4 comma 140. The text at the bottom reads, the slope of the line is 10, so after 7 years, the balance is 70 dollars