Unit 8 Variation Test

Determine if the following equations represent a direct variation, inverse variation, or no variation.

Determine if the following table represents a direct variation, inverse variation, or no variation:

In the equation y = 2x, k is

In which graph is y a direct variation of x?

Given the following table, find the constant, k. (only type the number)

If y varies directly as x, and the constant of variation is -3, which equation represents the relationship

If the point (4,2) lies on the graph of a line that represents a direct variation, what is the constant of variation?

In the table below, y varies directly with x, Which equation best describes the data?

In the table below, y varies inversely with x. What is the equation that best describes the relationship?

​ (a)  

Time traveling varies inversely with the average speed. If a train travels between two cities in 4 hours at an average speed of 65 miles per hour. Write the equation for this scenario. Write your answer in variation form: $$y=kx\ or\ y=\frac{k}{x}$$