Which ordered pair of the following is not lies on the graph of the equation x + 3y = 7.
(1,2)
(4,1)
(2,1)
(-2,3)
Answers
Answer:
_2, 3 because it's negative
Given :- Which ordered pair of the following is not lies on the graph of the equation x + 3y = 7.
a) (1,2)
b) (4,1)
c) (2,1)
d) -2,3)
Solution :-
putting all given options we get,
a) (1, 2)
→ x + 3y = 7
→ 1 + 3 * 2 = 7
→ 1 + 6 = 7
→ 7 = 7
therefore, option (a) (1, 2) is lies on the graph of the given equation .
a) (4, 1)
→ x + 3y = 7
→ 4 + 3 * 1 = 7
→ 4 + 3 = 7
→ 7 = 7
therefore, option (b) (4, 1) is lies on the graph of the given equation .
c) (2, 1)
→ x + 3y = 7
→ 2 + 3 * 1 = 7
→ 2 + 3 = 7
→ 5 ≠ 7
therefore, option (c) (2, 1) does not lies on the graph of the given equation .
d) (-2, 3)
→ x + 3y = 7
→ (-2) + 3 * 3 = 7
→ (-2) + 9 = 7
→ 7 = 7
therefore, option (d) (-2, 3) is lies on the graph of the given equation .
Hence, we can conclude that, option (c) (2, 1) does not lies on the graph of the given equation .
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