Determine if the given subset of $R ^ { 2 }$ is open, closed, both open and closed, or neither open nor closed. All points $( x , y )$ so that $2 \leq x \leq 12$ and $\pi \leq y \leq 7$
A) Open
B) Closed
C) Both open and closed
D) Neither open nor closed

Question

Quizplus · Accepted Answer

The subset is closed because it includes its boundary points, meaning every point on the edge of the rectangle defined by $2 \leq x \leq 12$ and $\pi \leq y \leq 7$ is included in the set.

Determine If the Given Subset Of R2R ^ { 2 }R2

Determine If the Given Subset Of $R ^ { 2 }$