Intersection and union of sets....so confused

[ironheadjack]

So I'm going through Aleks College algebra doing good, but then I get to this problem, and I have been stumped, perplexed, confused, and lost for the past 3 days trying to figure this out. I have read every article Bing gave me, tried using purplemath, mathway, and I am still lost. Something is just not clicking for me.

Could someone please walk me through this problem, before I pull all of my hair out.


Sets C and D are defined as:

C={y |y≥2}

D={y |y>6}

Write C∪D and C∩D, using interval notation. If set is empty, write Ø.



Any help is much appreciated.