In this hypothetical universe, where the speed of light \( c \) is proportional to the local gravitational field strength \( g \) (i.e., \( c = k \cdot g \), where \( k \) is a proportionality constant), the journey of a laser pulse from a region of weak gravity toward a massive black hole would differ significantly from our universe's behavior. Here's how its speed, frequency, and trajectory would change:

### 1. **Speed of the Laser Pulse:**
   - **Initial Region (Weak Gravity):**  
     In the region of weak gravity, \( g \) is small, so the speed of light \( c \) is also small. The laser pulse starts its journey at this low speed.
   - **Approaching the Black Hole (Stronger Gravity):**  
     As the laser pulse approaches the black hole, the gravitational field strength \( g \) increases dramatically. Since \( c \propto g \), the speed of the laser pulse increases continuously as it gets closer to the black hole. Near the event horizon, where \( g \) becomes extremely large, the speed of light would approach a very high value (but still finite, unless \( g \) becomes infinite at the singularity).
   - **At the Event Horizon:**  
     If the gravitational field strength \( g \) at the event horizon is such that \( c \) becomes very large, the laser pulse would move extremely fast. However, if \( g \) diverges at the singularity, \( c \) would also diverge, leading to unphysical behavior (unless the model is modified to prevent this).

### 2. **Frequency of the Laser Pulse (Gravitational Blueshifting):**
   - In our universe, light loses energy (redshifts) as it climbs out of a gravitational well. Here, the situation is reversed: the laser pulse is falling into a gravitational well, so it gains energy.
   - As the laser pulse approaches the black hole and \( g \) increases, its frequency would increase (blueshift) because it gains energy from the gravitational field. The blueshift would be proportional to the increase in \( g \).
   - Near the event horizon, the frequency could become extremely high, potentially approaching infinity if \( g \) diverges.

### 3. **Trajectory of the Laser Pulse:**
   - **Initial Trajectory (Weak Gravity):**  
     In weak gravity, the laser pulse travels in nearly a straight line at a low speed.
   - **Approaching the Black Hole (Strong Gravity):**  
     As \( g \) increases, the trajectory of the laser pulse would bend more sharply due to the stronger gravitational field. This is similar to gravitational lensing in our universe, but here the bending would be more extreme because the effective "force" of gravity is stronger.
   - **Near the Event Horizon:**  
     The laser pulse would be bent very strongly, possibly to the point where it cannot escape the black hole, just as in our universe. However, the high speed of light near the event horizon might allow it to follow a different escape path compared to our universe's static scenario.
   - **Possible Escape or Capture:**  
     If the laser pulse is aimed directly at the black hole, it would likely be captured. If it is aimed at an angle, the increased speed might allow it to escape at a closer distance than in our universe, but the extreme bending could still prevent escape.

### Key Differences from Our Universe:
- **Speed of Light:** In our universe, \( c \) is constant, but here it varies with \( g \). This means the laser pulse accelerates as it falls into the black hole.
- **Blueshifting:** In our universe, light redshifts when falling into a gravity well (due to time dilation). Here, it blueshifts because the speed of light increases, and energy is gained.
- **Trajectory Bending:** The bending would be more extreme due to the stronger effective gravitational field.

### Implications:
This hypothetical universe would have very different physics:
- The equivalence principle might not hold, as the speed of light is not invariant.
- Time dilation and other relativistic effects would be altered.
- Black holes might behave differently, possibly allowing light to escape more easily if the speed increase is significant.

This scenario is highly speculative but illustrates how changing a fundamental constant (like the constancy of \( c \)) can drastically alter the behavior of light in gravitational fields.