Answer: the initial balance on the loan is $8000.
Step-by-step explanation: The expression given, y = -1000x + 8000, represents a linear equation. In this equation, y represents the balance on the loan and x represents a variable. To determine the initial balance on the loan, we need to find the value of y when x is equal to 0.
To find the initial balance:
1. Substitute x = 0 into the equation:
y = -1000(0) + 8000
y = 0 + 8000
y = 8000