Question

Which of the following situations will include the origin when graphed?

Hayley runs at a pace of 1 mile every 8 minutes.
Gas costs $3.50 per gallon.
It is 68° at 7 a.m., and the temperature increases 5° every hour.
Phone service costs $5.00, and an additional 5 cents for each minute.

Answer 1

The situation that will include the origin when graphed is phone service costs $5.00, and an additional 5 cents for each minute.

When we graph this situation, the x-axis represents the number of minutes used, and the y-axis represents the total cost. At zero minutes, the total cost is $5.00, which is the origin. As the number of minutes used increases, the total cost will increase as well, resulting in a line with a positive slope.