Solving Inequality

• January 30th 2009, 05:10 AM
Mudd_101
Solving Inequality
Ok Hey I just have a quick question, I have a test today and I know one of the questions will ask me to solve an inequality (find the values of x that are less than eleven for example)

I was just wondering, I could use graphing right??? That is still solving it even though I'm not really manipulating the equation in any way.

I just want to know if it would be reasonable for my teacher to mark me down for using graphing and not manipulating ( I'm quite sure they won't specify as to how to solve the inequality)
• January 30th 2009, 05:24 AM
masters
Quote:

Originally Posted by Mudd_101
Ok Hey I just have a quick question, I have a test today and I know one of the questions will ask me to solve an inequality (find the values of x that are less than eleven for example)

I was just wondering, I could use graphing right??? That is still solving it even though I'm not really manipulating the equation in any way.

I just want to know if it would be reasonable for my teacher to mark me down for using graphing and not manipulating ( I'm quite sure they won't specify as to how to solve the inequality)

Hi Mudd,

You should get clarification from your teacher as to how s(he) would like to see the solution expressed.

Solve: $x-5 \ge -3$

$x \ge 2$

Solution written in set notation: $\{x|x \ge 2\}$

Solution written in interval notation: $[2, +\infty)$