SOLUTION: Which of the ordered pairs (–11, 3), (1, 0), (–7, –2), (–19, 5) are solutions for the equation x + 4y = 1?

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Question 75569: Which of the ordered pairs
(–11, 3), (1, 0), (–7, –2), (–19, 5)
are solutions for the equation x + 4y = 1?

Answer by jim_thompson5910(21685) About Me  (Show Source):
You can put this solution on YOUR website!
Lets just plug in the possible solutions to see if they are valid.
x+%2B+4y+=+1 plug in (-11,3)
-11+%2B+4%283%29+=+1
-11+%2B+12+=+1
1+=+1 since its true, (-11,3) is a solution


x+%2B+4y+=+1 plug in (1,0)
1+%2B+4%280%29+=+1
1+%2B+0+=+1
1+=+1 since its true, (1,0) is a solution


x+%2B+4y+=+1 plug in (-7,-2)
-7+%2B+4%28-2%29+=+1
-7+-+8+=+1
-15+=+1 since its not true, (-7,-2) is not a solution

x+%2B+4y+=+1 plug in (-19,5)
-19+%2B+4%285%29+=+1
-19+%2B+20+=+1
1+=+1 since its true, (-19,5) is a solution
So the only solutions are (–11, 3), (1, 0), and (–19, 5)