find six solution for the equation 2x+y=7 say the answer
Answers
Answer:
Given equation 2x−y=7
(i)2x−y=7
If x=2 put the equation we get
2×2−y=7
⇒4−y=7
⇒−y=7−4
⇒y=−3
(2,-3)
(ii)2x−y=7
If x=3 put the equation we get
2×6−y=7
⇒6−y=7
⇒−y=7−6
⇒y=−1
(3,-1)
(i)2x−y=7
If x=4 put the equation we get
2×4−y=7
⇒8−y=7
⇒−y=7−8
⇒y=1
(4,1)
Answer:
Given equation is : 2x + y = 7
★ For x = —1 l, we get
—2 + y = 7
→ y = 9
( —1 , 9 ) is a solution .
★ For x = 0 , we get
0 + y = 7
→ y = 7
( 0 , 7 ) is a solution .
★ For x = 1 , we get
2 + y = 7
→ y = 5
( 1 , 5 ) is a solution .
★ For x = 2 , we get
4 + y = 7
→ y = 3
( 2 , 3 ) is a solution .
★ For x = —3 , we get
—6 + y = 7
→ y = 13
( — 3 , 13 ) is a solution .
★ For x = —2 , we get
0 + y = 7
→ y = 7
( —2 , 7 ) is a solution .
→ Hence, we have six solutions ( —1,9 ) , ( 0,7 ) , ( 1,5 ) , ( 2,3 ) , ( —3,13 ) , ( —2,7 ) .
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