PLEASE HELP!. A small rural town has experienced a population decrease at a rate of 25 people every 5 years since 1970. If the population of the town in 1970 wa
Mathematics
korbinwilkinsen
Question
PLEASE HELP!.
A small rural town has experienced a population decrease at a rate of 25 people every 5 years since 1970. If the population of the town in 1970 was 250, which of the following equations represents the town’s population as a function of time? (Assume 1970 is represented by x = 0, 1971 is represented by x = 1, and so on).
A.
y = –5x + 250
B.
y = –25x + 250
C.
–5x + y = 250
D.
–x – 25y = 250
A small rural town has experienced a population decrease at a rate of 25 people every 5 years since 1970. If the population of the town in 1970 was 250, which of the following equations represents the town’s population as a function of time? (Assume 1970 is represented by x = 0, 1971 is represented by x = 1, and so on).
A.
y = –5x + 250
B.
y = –25x + 250
C.
–5x + y = 250
D.
–x – 25y = 250
2 Answer

1. User Answers MellowK
Im pretty sure that the answer is D. 
2. User Answers Anonym
Answer:
A (tested this and was Correct)
beware there's a similar question but not the same equations
Stepbystep explanation:
slope of a line = difference in y
or
difference in x (or rise over run) = 25 / 5 slope m = 5
when x = 0 (that is the year 1970), the population is 250.
x = 0 represents the yintercept.
so the answer choice could have the slope = 5 and yintercept = 250
which leads to A y = –5x + 250