Answer:
aggregate; marginal product; positive; diminishing.
Step-by-step explanation:
Slopes are well depicted in image attachment.
Aggregate production function:
This function shows how the available inputs (production) of an economy affects the total real gross domestic product.
Note: another word for aggregate implies the whole or total production in an economy.
Marginal product function: The marginal product is the slope of the total aggregate function.
Remember, marginal product is the change in output that results from adding more unit of labor, in this case in an entire economy.