Direct Variation 2

Suppose y varies directly as x. If x = 15 when y = 12, find x when y = 21.

Suppose y varies directly as x. If x = 27 when y = 6, find x when y = 2.

The amount a store earns varies directly as the number of hours. A local store takes in $11,500 in a 4 hour period. Estimate how many hours it would take the store to earn $23,000

The number of apples sold varies directly as the cost. If 4 apples cost $0.45, find the cost of 12 apples.

Suppose y varies directly as x. If y = 30 when x = 8, find y when x = 4.

Suppose y varies directly as x. If y = 150 when x = 3, find y when x = 5.

On a scale, yards vary directly as feet. If 3 feet represent 30 yards, how many yards represent 5 feet.

Suppose y varies directly as x. If y = -4 when x = 32, find x when y = -0.375.

The number of books sold varies directly as the cost of the books. If 8 books cost $10.40, how many books can be bought for $32.50?

Suppose y varies directly as x. If y = -7 when x = -14, find x when y = 10.

Suppose y varies directly as x. If y = 3 when x = 15, find x when y = 5.

Does the table illustrate a direct variation?

y varies directly with x. If the constant of proportionality is 3 and y = 15, what is x?

y varies directly with x. If the constant of proportionality is 6 and y = 24, what is x?

y varies directly with x. If the constant of proportionality is 20 and y = 4, what is x?

y varies directly with x. If the constant of proportionality is 8 and y = 56, what is x?

y varies directly with x. If the constant of proportionality is 5 and y = 5, what is x?

y varies directly with x. If y = 10 and x = 2, what is the constant of proportionality?

y varies directly with x. If y = 20 and x = 5, what is the constant of proportionality?

y varies directly with x. If y = 50 and x = 5, what is the constant of proportionality?

y varies directly with x. If y = 18 and x = 3, what is the constant of proportionality?

y varies directly with x. If y = 12 and x = 15, what is the constant of proportionality?

Determine if the relationship between the two quantities is a direct variation. Explain your reasoning.

Determine if the relationship between the two quantities is a direct variation. Explain your reasoning.

Does the equation shown below represent a direct variation?

y=2x

Which graph shows a direct variation?

Write the equation for the direct variation, given the table.

Write an equation for this direct variation.

If x = 10.5 and y = 21, what is the equation that represents the direct variation?

If x= 20/3 and y = 10, what is the equation that represents the direct variation?