Imagine that the graph of RV/D for the galaxies you drew had a steeper slope. What implication would that have for the rate of the universe's expansion?

Question

There is no relationship between the steepness of the slope and the rate of expansion.

The steeper the slope, the slower the expansion.

The steeper the slope, the faster the expansion.

Answer 1

The greater the rate at which the universe is expanding, the greater the recession velocity at any given distance. As such, a steeper slope, which corresponds to recession velocity increasing more with distance, corresponds to a faster expanding universe.