Unit 1 Review: Ratios & Proportions (CALCULATOR ACTIVE)

A recipe calls for $\frac{1}{2}$ cup of milk for every $\frac{3}{4}$ cup of flour. How much milk is required for every cup of flour?  

•  $\frac{2}{3}$  

•  $\frac{1}{2}$  

•  $\frac{3}{4}$  

•  $\frac{4}{3}$  

Carmela walked 3 miles in $\frac{3}{4}$ hour. Hari walked 2 miles in $\frac{1}{2}$ hour.  Select each answer below that is true.

• Carmela and Hari walked at the same speed.

• Carmela walked $\frac{1}{2}$ mile in 30 minutes. 

• Hari walked 1 mile in 15 minutes.

Is there a proportional relationship between Category 1 and Category 2?

• Yes

• No

Jose burns an average of 200 calories in 25 minutes of running. How many calories does Jose burn per minute?

• 8 calories

• 18 calories

• 4 calories

• 5,000 calories

Which of the following equations represent a proportional relationship? Choose all that apply.

• $x=2y$

• $a=\frac{1}{3}b$

• $4x=y-2$

• $\frac{7}{3}x=n$

• $\frac{1}{2}=\frac{1}{4}$

Rachelle can walk 2.5 miles in 40 minutes. At this rate, how far can she walk in 1 hour?

• $3\frac{3}{4}$ miles

• 3 miles

• $2\frac{3}{4}$ miles

• 100 miles

A daycare serves apple slices to children at lunchtime. The table below shows how many apples were cut up and served each day of the week in relation to the number of children in attendance. Is there a proportional relationship between the number of children and the number of apples in this situation?

• Yes

• No

Is the following graph proportional? Explain by picking the best possible answer.

• Yes; The graph is a straight line through the origin.

• No; The graph does not go through the origin.

• No; The graph is not a straight line.

• Yes; The graph is a curved line.

A recipe calls for $\frac{1}{4}$ cup of brown sugar for every $\frac{2}{3}$ cup of white sugar. How many cups of brown sugar is required for every cup of white sugar?   

•  $\frac{1}{8}$  

•  $\frac{3}{8}$  

•  $\frac{1}{4}$  

•  $\frac{3}{4}$  

What is the constant of proportionality in this graph?

• 9 mph

• 36 mph

• 8 mph

• 18 mph