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Help.

NotSoSmart  Sep 26, 2017
 #1
avatar+87641 
+1

 

To find the domain, NSS....list all the points from left to right......note that we have

 

(-4 ,-1), (-1, 4), (1, 1) , (4,1).......now  list the x values in order.....so we have   [ -4, -1, 1 , 4 ]....and this is the domain

 

To find the range....list the points in order from the bottom of the graph to the top of the graph......

 

( -4, -1) , (1,1) , ( 4,1), (-1,4)    .....note that the ones in red can be listed in any order...

 

Now......list these points  y  values in order.........,so we have  [ -1 , 1 , 4 ]....and this is the range

 

This is a function......as long as we don't have two points with the same x value but two different y values, we have a function

Also......its a function because it passes the vertical line test....that is.....any vertical line drawn on the graph will only intersect one point at a time

 

Do you see what the correct answer is ???

 

 

cool cool cool

CPhill  Sep 26, 2017
edited by CPhill  Sep 26, 2017
 #2
avatar+2509 
+1

Yeah I think so.....

NotSoSmart  Sep 26, 2017

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