anonymous
  • anonymous
What are the x and y intercepts, test point, and what type of line do I use for 2y+x<10? Please helpp!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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  • Owlfred
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anonymous
  • anonymous
test the origin
anonymous
  • anonymous
first sketch the line 2y +x = 10 ( and it should be dashed because its only less than ( not less than or equal )

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anonymous
  • anonymous
the line has x intercept ( set y=0) of 10 , and y intercept ( set x=0 ) of 5
anonymous
  • anonymous
so i fill Y in with zero and get an answer then I fil x in with zero and get another answer? then I graph it and shade everything to right?
anonymous
  • anonymous
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anonymous
  • anonymous
I understand completely now. Thanks sooo muchhh(:
anonymous
  • anonymous
and can I use 1 as a test point?
anonymous
  • anonymous
1 isnt a point
anonymous
  • anonymous
you usually use the origin
anonymous
  • anonymous
(0,1) ?
anonymous
  • anonymous
unless the graph goes throught the origin
anonymous
  • anonymous
yes , but 0,0 makes things easier, because you sub 0 into something alot of things disappear
anonymous
  • anonymous
Oh that makes more sense. thanks.
anonymous
  • anonymous
except for this like cosx , where cos 0 = 1
anonymous
  • anonymous
when you draw the line, it cuts the plane into two sections, and its either one section or the other , then you check a point ( you can pick any you like by (0,0) or (1,0) , smal numbers are easiest , you find a point where the inequality holds, and then you know the inequality is true in the "half plane " where your test point was.
anonymous
  • anonymous
similarly , if you were to sub in the origin and it didnt satisfy the inequality then you know the region you want is the one that doesnt contain the origin
anonymous
  • anonymous
Ok thanks. this helped so much cause I have Algebra finals tomorrrow. But again, thanks so much, this means a lot. Goodnight(:

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