Math 7 Topic 2 Test Review

The equation y = 7.6x represents a proportional relationship. What is the constant of proportionality?

Does this graph show a proportional relationship?

• Yes, because it is a straight line

• Yes, because it goes through the origin

• Yes, because it is a straight line and goes through the origin

• No, it is not

What is the constant of proportionality,

and what does it mean in this situation?

A grocery store manager uses 1/2 crate of apples for every 3/4 crate of oranges in a fruit display. How many crates of oranges will she need if she uses 2 ½ crates of apples? Draw the proportion you would use to solve.

Which persons picture frames show constant proportionality?  Write the equation that would go with it.

• Mia's

  y=3.5x

• Mia's 2/7x

• Riley's

  y=5/8x

• Riley's

  y=1.6x

Janet hiked 3/8 mile in 1/4 hour. How fast

did she hike, in miles per hour?

• 1.5mph

• 0.666mph

• 3/32 mph

• 2 mph

Rachel used 4.5 cups of apple juice in a holiday fruit punch that serves 12 people. Art used 4.75 cups of apple juice in a holiday fruit punch that serves 10 people. How much more apple juice is in one serving of Art’s holiday fruit punch

• 0.25 per person

• 0.375 per person

• 0.475 per person

• 0.1 per person

At the local bookstore, Jim bought 2 paperback books for $13.00 Maria bought 5 paperback books for $32.50. Tanya bought 7 paperback books for $45.50.

A graph is proportional if...

• It is straight

• It passes through the origin

• Its straight and it passes through the origin

Which best describes the graph represented in this table?

•  proportional
• non-proportional