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What is the solution to this system of equations. Use any method you choose

y = x + 8
y = 4x-1

User Labago
by
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2 Answers

8 votes
x + 8 = 4x - 1
3x = 9
x = 3

y = 3 + 8 = 11
User Hriskesh Ashokan
by
7.6k points
4 votes

Answer:

x = 3, y = 11

Explanation:

Use substitution:


x + 8 = 4x-1\\

Subtract x from both sides


8 = 3x - 1

Add 1 to both sides


9 = 3x

Divide both sides by 3


x = 3

Now substitute x = 3 into the equation y = x + 8


y = 3 + 8


y = 11

That means the solution is x = 3, y = 11

User Vincent Low
by
8.2k points

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