Question

How does changing the slope to a number other than 1 effect the graph

Answer 1

Slope is rise over run.
Slope can be viewed as rise/1.
If your slope is greater than 1, your rise will also be greater than 1. Therefore making the line steep.
If your slope is a fraction, your line will not be as steep as 1. A fraction indicates there's more run than rise.
Negative numbers will make your line go in the opposite direction, the negative direction.

Answer 2

That's a very.. simple version of it. Play with a graphing calculator and see for yourself! :)