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27 votes
27 votes
Is (2,-1) a solution of 2x-y=5? Explai
how your work.

User Temuraru
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1 Answer

17 votes
17 votes

Answer:

Yes, (2, -1) is a solution.

Explanation:

Plug in 2 for x and -1 in for y and see if it is a true statement.

2x - y = 5

2(2) - (-1) = 5

4 - (-1) = 5 Subtracting a negative number is the same as adding a positive number

4 + 1 = 5

5 = 5 Since this statement is true, (2,-1) is a solution.

User Shoeb Siddique
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