Answer: r = 1
Step-by-step explanation:
The slope of a line can be represented as
. Plugging in the following values would provide you with:




Hope it helps :) and let me know if you want me to elaborate on anything.
28/7 =4
7•4 is 28 or
7+7+7+7 is also 28
Do you have a picture or something to accompany the question?
This is what I got use photo math
Its called amortization schedule