SOLUTION: Determine the domain and range of each relation. y=-2x+1

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Question 80887This question is from textbook algebra
: Determine the domain and range of each relation. y=-2x+1 This question is from textbook algebra

Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
Determine the domain and range of each relation. y = -2x + 1



The domain is

"ALL REAL NUMBERS", or

Â, or

{x|x Î Â } or
 
(-¥,¥) 

because any real number can be substituted for x and you will
always get a real number for y.

The range is also

"ALL REAL NUMBERS", or

Â, or

{x|x Î Â } or
 
(-¥,¥) 

because for any real number you choose, it is always possible to find 
a number such that if you substitute it for x you will get that
real value for y. 

Here is the graph of y = -2x + 1

graph%28400%2C400%2C-5%2C5%2C-5%2C5%2C-2x%2B1%29

Edwin