anonymous
  • anonymous
show that each pair is a solution of the equation 2y+x=5;(-1,3) (7,-1)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
just put values of x & y in your equation and verify that your statement is still true
anonymous
  • anonymous
i dnt understand were to put them
anonymous
  • anonymous
In an ordered pair (-1,3) the first number is the x and the second is the y (x,y) so you put -1 in for x and 3 in for y 2(3) + (-1) = 5 6 + (-1) = 5 5 = 5 so that point (-1,3) is on the line 2x + y = 5 now try the next point and I will check you out.

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anonymous
  • anonymous
2(7)+-1=5 did i write that right
anonymous
  • anonymous
OK.. the point is (7,-1) so x = 7 and y = -1 your equation is 2y + x = 5 make sure you put in x = 7 and y = -1
anonymous
  • anonymous
so this isnt a coordinate
anonymous
  • anonymous
2(-1) + 7 = 5 -2 + 7 = 5 5 = 5 so (7,-1) is also on that line... it is a solution.
anonymous
  • anonymous
yes... it is a coordinate.. but you put the x value of 7 into the y variable and you put the y value of -1 into the x variable. that is the mistake you made.
anonymous
  • anonymous
i put them in the wrong place
anonymous
  • anonymous
Yes.
anonymous
  • anonymous
i got what ur saying so it would always be in the order when i fill in xand y

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