To determine which ordered pair is part of the solution set for the equation \( y = 4x + 2 \), we will substitute \( x = 3 \) into the equation and calculate the corresponding \( y \) value.
Substituting \( x = 3 \):
\[ y = 4(3) + 2 \] \[ y = 12 + 2 \] \[ y = 14 \]
Now, we can compare this result with the provided options:
- A. (3,14) — This matches our calculation.
- B. (3,45) — This does not match.
- C. (3,7) — This does not match.
- D. (3,12) — This does not match.
Therefore, the correct option is:
A. (3,14)