Which set of ordered pairs is a linear function?O A) (-2, -1), (0, 1), (2, 1), (4, 1)O B) 12, 1), (0,1), (2, 1), (4,-1)O C (-2,
-1), (0, 1), (2,-1), (4, 1)O D (-2, 1), (0, 1), (2, 1), (4, 1)
1 answer:
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Answer:
Number of ducks = 37
Number of pigs = 18
Step-by-step explanation:
Let,
x be the number of ducks
y be the number of pigs
According to given statement;
x+y=55 Eqn 1
2x+4y=146 Eqn 2 (As ducks will have 2 legs and pigs will have 4)
Multiplying Eqn 1 by 2
2(x+y=55)
2x+2y=110 Eqn 3
Subtracting Eqn 3 from Eqn 2
(2x+4y)-(2x+2y)=146-110
2x+4y-2x-2y=36
2y=36
Dividing both sides by 2
Putting y=18 in Eqn 1
x+18=55
x = 55-18
x = 37
Hence,
Number of ducks = 37
Number of pigs = 18