中等MATH-INEQ-008
The inequality y ≤ 2x + 1 represents which region?
A. Above the line y = 2x + 1, including the line
B. Above the line, excluding the line
C. Below the line, excluding the line
D. Below the line y = 2x + 1, including the line✓ 答案
解說
y is less than or equal to the line, so the region is on and below the line. A strict inequality would exclude the boundary. 'Above' would be y ≥ 2x + 1.