Solve the system of equations graphed on the coordinate axes below.

y, equals, minus, start fraction, 2, divided by, 3, end fraction, x, plus, 2
y=

3
2

x+2
y, equals, one third, x, minus, 4
y=
3
1

x−4

1 answer

To solve the system of equations given by:

  1. \( y = -\frac{2}{3}x + 2 \)
  2. \( y = \frac{1}{3}x - 4 \)

we can set them equal to each other since both represent \( y \):

\[ -\frac{2}{3}x + 2 = \frac{1}{3}x - 4 \]

Next, we can eliminate the fractions by multiplying every term by 3:

\[ 3\left(-\frac{2}{3}x\right) + 3(2) = 3\left(\frac{1}{3}x\right) - 3(4) \] \[ -2x + 6 = x - 12 \]

Now, we can rearrange the equation to isolate \( x \):

Add \( 2x \) to both sides:

\[ 6 = 3x - 12 \]

Next, add 12 to both sides:

\[ 6 + 12 = 3x \] \[ 18 = 3x \]

Now, divide by 3:

\[ x = 6 \]

Now that we have the \( x \) value, we can substitute it back into either equation to find the \( y \) value. We'll use the first equation:

\[ y = -\frac{2}{3}(6) + 2 \] \[ y = -4 + 2 \] \[ y = -2 \]

Thus, the solution to the system of equations is:

\[ (x, y) = (6, -2) \]

So, the coordinates of the intersection point are \((6, -2)\).