SOLUTION: please help : Solve the system by graphing and then get an exact solution by using either substitution or elimination :
2x - y = -1
6x + 3y = 0
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Expressions-with-variables
-> SOLUTION: please help : Solve the system by graphing and then get an exact solution by using either substitution or elimination :
2x - y = -1
6x + 3y = 0
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Question 64681This question is from textbook An Incremental Development
: please help : Solve the system by graphing and then get an exact solution by using either substitution or elimination :
2x - y = -1
6x + 3y = 0
This question is from textbook An Incremental Development
You can put this solution on YOUR website! (2x-y=-1)3
6x-3y=-3 ------------------------1
6x+3y=0 -------------------------2
subtract2 from1
change the sign
-6y=-3
y=3/6
y=1/2
2x-y =-1
substitute the value of y in this equation
2x-1/2 =-1
4x-1=-2
4x=-2+1
4x=-1
x=-1/4
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