Unit Test

Question 1

Which equation is being modeled?

Revolt · Accepted Answer

4x + (–3) = 5x + 4

Question 2

positive unit tiles

Revolt · Accepted Answer

2

Question 3

positive x-tiles

Revolt · Accepted Answer

8

Question 4

negitive unit tile

Revolt · Accepted Answer

6

Question 5

positive x-tiles positive unit tiles For the right side of the equation positive x-tiles negitive unit tile

Revolt · Accepted Answer

9; Selection 1: 9; Selection 2: 2; Selection 3: 8; Selection 4: 6

Question 6

How do you create zero pairs using algebra tiles?

Revolt · Accepted Answer

Add a positive unit tile to a negative unit tile.

Question 7

x =

Revolt · Accepted Answer

PENDING

Question 8

Tucker was asked to solve the equation 5x + 3 = 6x + 1. He did not know if his first step should be to add 5 negative x-tiles, or 1 negative unit tile, to both sides. What advice would you give Tucker to help him decide on his first step? Explain.

Revolt · Accepted Answer

It does not matter which he does first. Either way, zero pairs will be created on both sides, which will isolate the variable to determine x. Adding the x-tiles and then the unit tile, or visa versa, will give the same solution.

Question 9

x =

Revolt · Accepted Answer

1

Question 10

Where did Emory make an error?

Revolt · Accepted Answer

In step 2, he should have added 5 positive unit tiles to both sides.

Unit Test Answers

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