The original equation of the line is \( y = \frac{2}{3}x - 4 \), and you want to transform it to the equation \( y = \frac{2}{3}x \).
To do this, you need to remove the "-4" from the equation. Since "-4" indicates a downward shift of 4 units, you would need to shift the entire graph upward by 4 units to counteract that downward shift.
Thus, the correct transformation is:
Shift the graph up 4.