No. The distance of a line on a graph will not affect how steep it is. Distance does not affect slope.
A steep slope on a position-time graph indicates an average velocity with a fast speed.
A less steep slope indicates a slower velocity than that of a steeper slope.
The slope of the function on a displacement vs. time graph is (change in displacement) divided by (change in time) which is just the definition of speed. A relatively steep slope indicates a relatively high speed.
A slope greater than 1 makes a graph be really steep. On the other hand, a slope less than 1 but greater than 0 makes a graph less steep. Therefore any fraction slope would give you a less steep graph.An example could be y=(1/3)x.
less steep (apex)