SOLUTION: Could someone helo me please Find the domain and range of Y=squaree root of 8+5x thx

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Question 61665: Could someone helo me please
Find the domain and range of Y=squaree root of 8+5x
thx
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Find the domain and range of.
y=sqrt%288%2B5x%29
[DOMAIN IS EVERYTHING THE X'S CAN BE, THE RANGE IS EVERYTHING THE Y'S CAN BE BECAUSE OF X]
:
You can't have a real number solution for a negative number, so:
8%2B5x%3E=0
-8%2B8%2B5x%3E=0-8
5x%3E=-8
5x%2F5%3E=-8%2F5
x%3E=-8%2F5 <--domain
At x=-8/5, y=0
when x gets really big, y gets big too, so the range is y%3E=0
:
Happy Calculating!!!