1. **Problem:** Write an equivalent fraction to $\frac{2}{3}$ that also represents the shaded region. 2. **Formula:** Equivalent fractions are found by multiplying or dividing the numerator and denominator by the same nonzero number. 3. **Work:** Multiply numerator and denominator of $\frac{2}{3}$ by 2: $$\frac{2}{3} = \frac{2 \times 2}{3 \times 2} = \frac{4}{6}$$ 4. **Answer:** An equivalent fraction representing the shaded region is $\frac{4}{6}$.