Proportional Relationships Answers

Which linear function shows a direct variation?Graph AGraph BGraph CGraph D

Which function has the greatest constant of variation?Ax891011y2022.52527.5Bx1234y3.26.49.612.8CD

The table below shows the number of color pages a printer prints out over a period of time.Printed Pages in ColorTime (min), x26818Number of pages, y391227What is the constant of variation?

A veterinarian knows that a 50-pound dog gets 0.5 milligram of a certain medicine, and that the number of milligrams, m, varies directly with the weight of the dog, w. The vet uses these steps to find the amount of medicine to give a 10-pound dog.Step 1Find the constant of variation.Step 2Write the direct variation equation.Step 3Substitute 10 into the equation to find the dosage for a 10-pound dog.Step 4Solve for w.The 10-pound dog needs 1000 milligrams.In which step did the veterinarian make the first error?

Caleb made the table below to show the number of hours he works and the amounts he earns over a four-week period.Caleb’s EarningsHours12151821Earnings(in dollars)140170200230Which describes whether the relationship between the earnings and the number of hours represents a direct variation?

Which graph or equation represents a nonproportional relationship? ABCy 0.375xD

Corrine wrote temperatures in degrees Celsius and the equivalent temperatures in degrees Fahrenheit.Equivalent TemperaturesCelsius–1051020Fahrenheit14415068Which explains how Corrine could determine if the temperatures vary directly?

Lydia writes the equation below with a missing value.She puts a value in the box and says that the equation represents a direct variation. Which explains whether the equation could represent a direct variation?

Which representation has a constant of variation of –2.5?Ax–2–3–4–5y–5–7.5–10–12.5Bx46810y–10–15–20–25CD

Which explains whether or not the values in the table represent a direct variation?x461020y11.52.55