Ratios and Proportional Relationships Review

If Trevor rode 25 miles in 2 hours, what is his speed in miles per hour?

• 10 miles per hour

• 12.5 miles per hour

• 15 miles per hour

• 20 miles per hour

How can you express a ratio as a fraction?

• By placing the first quantity over the second quantity.

• By adding the two quantities together.

• By multiplying the two quantities.

• By subtracting the second quantity from the first.

What is the formula for finding the constant of proportionality in a direct variation?

• k = y/x, where y is the dependent variable and x is the independent variable.

• k = x/y, where y is the dependent variable and x is the independent variable.

• k = y + x, where y is the dependent variable and x is the independent variable.

• k = y - x, where y is the dependent variable and x is the independent variable.

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

• 2:3

• 3:2

• 1:1

• 4:3

How do you find the constant of proportionality?

• By adding the two quantities together

• By multiplying the two quantities

• By dividing one quantity by the other when the two quantities are proportional

• By subtracting one quantity from the other

What does the point (20, 5) represent in a proportional relationship?

• It represents that if she delivers 20 newspapers, she will earn $5.

• It indicates that for every 20 newspapers delivered, she earns $10.

• It shows that delivering 20 newspapers results in a loss of $5.

• It means she will earn $5 for every 10 newspapers delivered.

How do you determine if a relationship is proportional from a table of values?

• Check if the ratios of corresponding values are constant.

• Look for a linear pattern in the values.

• Identify if the values increase or decrease together.

• Calculate the average of the values.

If Ellie made $45 for 6 hours of babysitting, what is her hourly rate?

• $5.00 per hour

• $6.00 per hour

• $7.50 per hour

• $8.00 per hour

What is the meaning of the term 'cross-multiplication' in ratios?

• Cross-multiplication is a method used to determine if two ratios are equivalent by multiplying the numerator of one ratio by the denominator of the other.

• Cross-multiplication is a technique for adding two fractions together.

• Cross-multiplication is a way to simplify a single ratio by dividing both terms by a common factor.

• Cross-multiplication is a method for finding the average of two ratios.

If a car travels 60 miles in 1 hour, how far will it travel in 3 hours?

• 120 miles

• 150 miles

• 180 miles

• 200 miles