Can you guys help me with these? Converting standard form of linear equation to slope intercept form of a liner equation

What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.