Unit 3B Common Assessment Review

A satellite is 18 meters wide. A model of it was built with a scale of 1 centimeter : 3 meters. How wide is the model?

• 6 meters

• 6 centimeters

• 54 meters

• 54 centimeters

The area of a patio is 120 square feet. The length of the patio is 12 feet. Plot line segments on the grid below to create a scale drawing of the patio where 1 unit represents 2 feet.

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Quadrilateral A and Quadrilateral B are similar figures. What is the scale factor from Quadrilateral A to Quadrilateral B?

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The area of Rectangle ABCD is 96 in². The area of Rectangle WXYZ is 864 in². Rectangle ABCD has a base of 12 in and a height of 8 in. If the two rectangles are similar, what are the base and height of Rectangle WXYZ?

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The graph shows the distance traveled by an Olympic-level sprinter over time during a race. Find the slope of the line.

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All of the labeled points in the graph are on the same line. Determine the values of a and b.

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Michelle uses beads to make bracelets. For each bracelet, Michelle uses red beads and blue beads. The ratio of red beads to blue beads is 3:2. Graph the line that shows the proportional relationship between the number of red beads and the number of blue beads.

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What does the point (1, 3) represent on the graph below?

• It shows that the revenue is a constant rate of $1.

• It shows that for every 1 item produced, the revenue is $3.

• It shows that for every 3 items produced, the revenue is $1.

• It shows that for every 300 items produced, the revenue is $100.

Melanie buys 2 shells for $0.80. Rosi buys 3 shells for $1.20. Carlos buys 4 shells for $1.60. Use the graph to represent this situation. Is there a proportional relationship between the cost and the number of shells? If so, what does the constant of proportionality mean in this situation?

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Draw a graph of a proportional relationship that passes through the point (2, 1).

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