<li>I know that an integer is not supposed to have a decimals or fractions. So, 3 is an integer. But are 3.0 and 9/3 still integers even though they have either a decimal or fraction, but are still equal to 3?</li>
<li>If a question gives you that two lines never intersect, are we supposed to assume or derive that those two lines are parallel?</li>
</ol>
<p>Q1. Yes. An integer should not have a non-zero decimal or fraction.</p>
<p>Q2. By definition, those two lines are parallel.</p>
<p>The first response is techniquely wrong on the second question. Two lines are able to not intersect in the 3D world. Only in 2D (3D drawn on a plane) are all non-intersecting lines parellel.</p>
<p>for question #1, do you mean yes to 3.0 and 9/3 being integers?</p>
<p>Yes. If a value can be rewritten in a equivalent form as an integer, it is an integer.</p>