There is no rate of change of Function 1. It's slope(rate of change) is zero.
Function 2 has a slope of 2.
Proof by contradiction is a form of proof that establishes the truth or the validity of a proposition, by showing that assuming the proposition to be false leads to a contradiction. I googled this so it may not be correct
This is what i got:
-x-20=6x+1
2.) 6k - 9
*can't see #3*
4.) -9p + 17
5.) -15b^2 - 1b + 6c
6.) -4j