<PRE><B>Question 181805</B>
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I suspect your two straight lines mean absolute value, something like this:


*[tex \LARGE \text{          }\math |27x - 50|]


Absolute value means:


*[tex \LARGE \text{          }\math x \geq 0\ \ \Rightarrow\ \ |x| = x\ \ \small\wedge\LARGE\ \ x &lt; 0\ \ \Rightarrow\ \ |x| = -x]


So for your expression:


*[tex \LARGE \text{          }\math 27x - 50 \geq 0\ \ \Rightarrow\ \ |27x - 50 | = 27x - 50 \ \ \small\wedge\LARGE\ \ 27x - 50 &lt; 0\ \ \Rightarrow\ \ |27x - 50 | = -(27x - 50)]

So you can say:


*[tex \LARGE \text{          }\math x \geq \frac{50}{27}\ \ \Rightarrow\ \ |27x - 50 | = 27x - 50 \ \ \small\wedge\LARGE\ \ x &lt; \frac{50}{27}\ \ \Rightarrow\ \ |27x - 50 | = -(27x - 50)]


That&#39;s about all you can do with this.  You might want to send us the rest of the problem as I suspect your *[tex \Large |27x - 50|] was set equal to something.  And then next time you need &quot;between two straight lines&quot; hold the Shift key and hit the backslash key right above the Enter key -- it gives you this:  |


If you are having trouble reading what I wrote, remember *[tex \Large p\ \ \Rightarrow\ \ q] means &quot;If p then q&quot; while *[tex \Large \small \wedge] means &quot;and&quot; as in: &quot;&lt;i&gt;&lt;b&gt;If&lt;/b&gt;&lt;/i&gt; x is greater than or equal to 50 over 27 &lt;i&gt;&lt;b&gt;then&lt;/b&gt;&lt;/i&gt; the absolute value of 27x - 50 is equal to 27x - 50 &lt;i&gt;&lt;b&gt;and if&lt;/b&gt;&lt;/i&gt; x is less than 50 over 27 &lt;i&gt;&lt;b&gt;then&lt;/b&gt;&lt;/i&gt; the absolute value of 27x - 50 is equal to the additive inverse of 27x - 50.&quot;



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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