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1 vote
Solving system by substitution
Y=3x
Y=x+4

2 Answers

3 votes

Answer:

y=3x is given so you put 3x in the equation sooo... u get 2

Explanation:

Y = x + 4

3x = x + 4

3x - x = 4

2x = 4

x = 2

User MarkusSchaber
by
8.9k points
3 votes

So we're given Y = 3x.

We now can replace Y, for 3x in the equation:

Y = x + 4

3x = x + 4

3x - x = 4

2x = 4

x = 2

User Flat
by
7.3k points

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