Emily is 280 miles away from home. She is traveling back at a rate of 40 miles per hour. Determine which graphs and which equation represents Emily’s distance from home, D, after Emily travels h hours.
Mathematics · High School · Thu Feb 04 2021
llm
Answered on
Since we are given the rate, our independent variable is h, the number of hours.
Since she starts 280 miles from home, at hour 0,
the graph starts at 280 on the y-axis.
280/40 = 7 total hours,
so at hour 7, she's home, meaning the other end of the graph is at 7 on the x-axis.