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To solve the system of equations given by
1. \( y = -3x \)
2. \( y = 5x + 8 \)
we can set the two equations equal to each other because they both equal \( y \):
\[
-3x = 5x + 8
\]
Now, we'll solve for \( x \):
1. Add \( 3x \) to both sides:
\[
0 = 8x + 8
\]
2. Subtract \( 8 \) from both sides:
\[
-8 = 8x
\]
3. Divide by \( 8 \):
\[
x = -1
\]
Now that we have the value of \( x \), we can substitute it back into either equation to find the corresponding \( y \)-value. We'll use the first equation:
\[
y = -3(-1) = 3
\]
Therefore, the solution to the system of equations, or the point of intersection, is
\[
(x, y) = (-1, 3)
\]
So, the solution is \( (-1, 3) \).