Which verbal description, when graphed has the same slope as y= -2x+6

a. teo has read 6 books. he reads 2 per day, x is the number of days and y is the total number of books read

b. caroline is 6 miles from home. she walks towards home at 2 miles per hour, x is the number of hours and y is the number of miles from home

c. ned deposits $6 per week into his saving account, which already has $2 in it, x is the number of weeks and y is the total of dollars