# algebra

you rollerblade at an average speed of 8 miles per hour. the number of miles m you rollerblade during h hours is modeled by m=8h. do these two quantities have direct variation?

1. 👍 0
2. 👎 0
3. 👁 96
1. A direct variation should have a constant positive slope, and zero y-intercept.
For example,
y=4x is a direct variation, but
y=-2x is not (negative slope),
nor
y=2x+100 (non-zero y-intercept).

1. 👍 0
2. 👎 0
posted by MathMate

## Similar Questions

1. ### algebra

you rollerblade at an average speed of 8 miles per hour. the number of miles m you rollerblade during h hours is modeled by m=8h. do these two quantities have direct variation? please help me with this. thank u

asked by sheryl on October 3, 2009
2. ### maths

A motorist travels 120 miles to his destionation at an average speed of 60 miles per hour and returns to the starting point at an average speed of 40 miles per hour.His average speed for the entire trip is 1. 53 miles per hour 2.

asked by peter on August 13, 2014
3. ### Math

6. Columbus' ships covered approximately 144 miles a day. How many miles would they have traveled in nine days? What was the average speed per hour? If there were two days when the weather did not permit movement, how many miles a

asked by Sue on March 31, 2014
4. ### Math

Amy wants to travel from elm town to lakeside at an average speed of 50 miles per hour. She travels half the distance and finds out her average speed has been on 25 miles per hour. How fast must she drive for the rest of the trip

asked by Cheyenne on May 7, 2018
5. ### Math

On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip the average speed was y miles per hour. The average speed for the round trip was 50 miles per hour. Show that

asked by Matt on November 18, 2016
6. ### math

A motorist travels 120 miles to his destination at an average speed of 60 miles per hour and returns at an average speed of 60 miles per hour and returns to the starting point at an average speed of 40 miles per hour. What is his

asked by Mike on July 11, 2015
7. ### Math

6. Columbus' ships covered approximately 144 miles a day. How many miles would they have traveled in nine days? What was the average speed per hour? If there were two days when the weather did not permit movement, how many miles a

asked by Anonymous on April 1, 2014
8. ### Math College 115

A hiker can walk 2 miles in 43 minutes. What is his average speed in miles per hour? Round your answer to two decimal places. The hiker's average speed is ___ miles per hour. What formula can be used to find the distance travel,

asked by Hneo on September 4, 2016
9. ### Math

Reposting see if someone else comes up with a different answer. Amy wants to travel from Elm town to Lakeside at an average speed of 50 miles per hour. She travels half the distance and discovers that her average speed has only

asked by Chey on May 10, 2018
10. ### math word problem

Here's the latest from the UMW math department: Andy drove from Richmond to Boston at an average speed of 50 miles per hour. If it took 5 hours to drive from Richmond to Philadelphia at an average speed of 70 miles per hour and if

asked by M.A. on August 25, 2010

More Similar Questions