Direct Variation

Front

The number of soft pretzels processed by a machine in a bakery is directly proportional to the number of minutes that the machine runs. The machine can process 450 pretzels in 7.5 minutes of continuous running. How many pretzels would the machine process in 30 minutes of continuous running?

Back

1800

Front

The cost of a soft drink varies directly with the number of ounces you buy. If 12 ounces cost $0.90, how many ounces could you buy for $7.20?

Back

96

Front

If y varies directly with x and y = 20 when x = 2.5, what is the value of y when x = 8?

Back

64

Front

A gardener knows that the number of potatoes harvested varies directly with the number of potato plants grown. Last year, the gardener harvested 189 potatoes from 9 potato plants. If the gardener plants 14 potato plants this year, how many potatoes can he expect to harvest?

Back

294

Front

Values x and y are in a direct proportional relationship. What will be the value of y when x is 20? Options: 35, 70, 140, 210

Back

70

Front

Back

Front

The table below shows the relationship between the number of hours Stacy works and her earnings. What is k, the constant of proportionality?

Back

35

Front

Is the constant of variation the same as the slope of the line?

Back

True

Front

The y-intercept will always be zero.

Back

True

Front

In the graph below, y is directly proportional to x. Based on the relationship shown in the graph, what is the value of y when x = 10?

Back

45