SOLUTION: Solve the system of linear equations by substitution. Check your solution. 4x + 2y = 0 y = 1/2x - 5

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Question 1073630: Solve the system of linear equations by substitution. Check your solution.
4x + 2y = 0
y = 1/2x - 5
Answer by addingup(3677) About Me  (Show Source):
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4x + 2y = 0
and
y = 1/2x - 5
Thus:
4x + 2(1/2x-5) = 0
4x + x-10 = 0
5x = 10
x = 2
Now solve for y:
4(2) + 2y = 0
8+2y = 0
2y = -8
y = -4
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Check:
4(2) + 2(-4) = 0
8 + (-8) = 0
8 - 8 = 0 Correct