Consider the system of equations. Which is the Best method to use for solving the system? 4x+y=1 2x+y=8
2 answers:
Answer: It is best solve using elimination method
Step-by-step explanation:
4x + y = 1 --------(1)
2x + y = 8---------(2)
subtract (2) from (1)
2x = -7
divide bothside by 2
2x/2 = -7/2
x= -7/2
we can substitute x = -7/2 in any of the equations.
Lets take equation (1)
4x + y = 1
4(-7/2) + y =1
2(-7) + y = 1
-14 + y = 1
y = 1+14
y =15
4x + y = 1
-2x - y = -8
2x = -7
x = -7/2
2(-7/2) + y = 8
-7 + y = 8
y= 15
elimination
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