Given the equation, determine whether a direct variation exists. If yes, identify the constant of variation.

The cost to board a dog at a kennel varies directly to the number of nights in which the dog will stay. If four nights cost $96, identify the constant of variation and write an equation to represent the relationship.

Given the table, determine whether a direct variation exists. If yes, identify the constant of variation and write the equation that represents the relationship.

Given the graph, determine whether a direct variation exists. If yes, identify the constant of variation and write the equation that represents the relationship.

Given the table, determine whether a direct variation exists. If yes, identify the constant of variation and write the equation that represents the relationship.

Given the table, determine whether a direct variation exists. If yes, identify the constant of variation and write the equation that represents the relationship.

The number of calories in a bag of cookies varies directly to the number of cookies in the bag. If a bag with sixteen cookies contains 1,120 calories, determine how many calories are in five cookies.

Determine if the data shown in the table represents a proportional relationship. If yes, give the constant rate.

Given the table, determine whether a direct variation exists. If yes, identify the constant of variation and write the equation that represents the relationship.

Given the equation, determine whether a direct variation exists. If yes, identify the constant of variation.

The cost to download songs on a music app varies directly to the number of songs downloaded. If it costs $5.95 to download 7 songs, find the cost to download 20 songs.

Given the graph, determine whether a direct variation exists. If yes, identify the constant of variation and write the equation that represents the relationship.

Given the graph, determine whether a direct variation exists. If yes, identify the constant of variation and write the equation that represents the relationship.