Identify Proportional Equations

Write an equation for this situation.

• k=19.25x

• y=19x

• y=19.25x

• y=9.5x

Write an equation to represent the proportional relationship in this table.

• y= 1/3x

• y=3x

• y= 5x

• y=0.3x

If the constant of proportionality is 10, which of the following is the correct proportional equation?

• 10=kx

• 10=k

• y=10k

• y=10x

Write an equation that represents the relationship between the weight(x) and the cost(y).

• y = 1/2 x

• y = 1/4 x

• y = 2x

• y = 4x

Which of the following equations can be used to find the constant of proportionality?

• k = x/y

• k = y/x

• y = k/x

• x = k/y

Cheddar Cheese cost $4.25 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?

• x = 4.25y

• y = 4.25x

• y = 4.25 - x

• y = 4.25 + x

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

Write an equation to represent the proportional relationship in this table.

• y=1/9x

• y=9x

• y=8x

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

The equation y=5x describes a proportional relationship between x and y. What is the constant of proportionality?

• 6

• 4

• 7

• 5