Answer:
Straight-line production possibilities frontier curve
Step-by-step explanation:
A production possibilities frontier (PPF) is the possible combination of goods that an economy can produce at a given time, with its existing technology and fully-utilized resources.
If an economy is subject to constant opportunity cost instead of exhibiting increasing opportunity cost, then it will have a straight-line production possibilities frontier curve. In contrast, an economy with an increasing opportunity costs will have a bowed-outward PPF (concave downward). This post will only discuss the straight-line PPF, as the prompt requires.
Straight-line production possibilities frontier curve: Constant opportunity cost
An economy that is subject to constant opportunity cost implies that it could only produce a specific number of one particular good. However, in order for that economy to produce that good, it must reduce the production of another good given its limited resources.
Example:
As an example, suppose we have an economy that could only produce two types of goods: shoes and t-shirts. In the attached screenshot of our fictional economy's straight-line PPF, it shows the possible combination of goods that it can produce given its limited resources. Point A shows that an economy must produce 0 t-shirts to produce 4 pairs of shoes. In Point B, it must produce 1 t-shirt in order to produce 3 pairs of shoes. An economy must produce a combination of 2 t-shirts and 2 pairs of shoes in Point C; 1 pair of shoes and 3 t-shirts in Point D; and 4 t-shirts and 0 pairs of shoes for Point E.