 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from Valeie, a student: When graphing a linear inequality, how do you know if the inequality represents the area above the line. |
Valeie,
Choose any point above the line and substitute it into the inequality. If the inequality is true at this point then the inequality is true at every point above the line. If the inequality is false then it is true for every point below the line.
Penny
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.