Decide whether each of the following situations represents a proportional relationship. Explain why or why not.
Karim is ordering video games. Each game costs
, and there is a shipping charge per order. How much will it cost him to order any number of video games?
Sketch a scatterplot for the total cost versus different numbers of games ordered. Does the relationship look linear? Does it go through the origin?
A given rectangle has an area of
square feet. What is the length for various widths?
What is the length for a width of
foot? feet? feet? What kind of relationship do the lengths have?
miles in hour minutes. Assuming he continues at a constant rate, how long will it take him to run any number of miles?
How long will it take him to run half a mile?
miles? Does this make sense for a proportional relationship?