1. Introduction to Macroeconomics
Graphing Review
Multiple Choice
Calculate the area of the shaded region.
A
15
B
4.5
C
9
D
7.5
Verified step by step guidance1
Identify the coordinates of the vertices of the shaded region. In this case, the shaded region is a rectangle with vertices at (1, 2), (1, 5), (4, 2), and (4, 5).
Determine the length of the sides of the rectangle. The horizontal side runs from x = 1 to x = 4, giving a length of 3 units. The vertical side runs from y = 2 to y = 5, giving a length of 3 units.
Use the formula for the area of a rectangle, which is length multiplied by width. In this case, both the length and width are 3 units.
Calculate the area by multiplying the length and width: Area = 3 units * 3 units.
Conclude that the area of the shaded region is the product of the length and width, which is 9 square units.
