Question

Use the information given to answer the question.

Randall is training to run a 10-mile race. The equation R=−0.1w+7.5
represents the time in minutes, R
, it takes him to run each mile after w
weeks of training.

Evelyn is training to run the same 10-mile race. The equation E=−0.5w+6.25
represents the time in minutes, E
, it takes her to run each mile after w
weeks of training.

What is the meaning of the y
-intercept in Evelyn’s equation?

(1 point)
Responses

Evelyn subtracts 0.05 second from her mile time after each week of training.
Evelyn subtracts 0.05 second from her mile time after each week of training.

Evelyn runs one mile in 6.25 minutes after 5 weeks of training.
Evelyn runs one mile in 6.25 minutes after 5 weeks of training.

Evelyn runs one mile in 6.25 minutes after 0 weeks of training.
Evelyn runs one mile in 6.25 minutes after 0 weeks of training.

Evelyn adds 0.05 second to her mile time after each week of training.

Answer 1

Evelyn runs one mile in 6.25 minutes after 0 weeks of training.

(For w = 0, E = 6.25, so the y‑intercept is her starting mile time.)