STAAR Review - Day 4

Which graph represents y as a function of x?

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Quadrilateral PQRS was translated 5 units to the right and 3 units up to create quadrilateral P'Q′R′S. Which rule describes this transformation?

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Triangle ABC was transformed to create triangle A'B'C′. Which rule best describes this transformation?

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Aquarium I contains 4.6 gallons of water. Louise will begin filling Aquarium I at a rate of 1.2 gallons per minute.

Aquarium II contains 54.6 gallons of water. Isaac will begin draining Aquarium II at a rate of 0.8 gallon per minute.

After how many minutes will both aquariums contain the same amount of water?

• 148 min

• 125 min

• 25 min

• 50 min

What value of x makes this equation true?

12x - 15 = 6 - 3x

• $\frac{7}{3}$

• $\frac{3}{7}$

• $\frac{5}{7}$

• $\frac{7}{5}$

A polygon will be dilated on a coordinate grid to create a smaller polygon. The polygon is dilated using the origin as the center of dilation.

Which rule could represent this dilation?

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A polygon is graphed on a coordinate grid with(,xy) representing the location of a certain point on the polygon. The polygon is transformed using the rule(,xy) --> (ax, ay).

Which statement must be true?

• If a is greater than 1, the image of the polygon is congruent to the polygon.

• If a is between 0 and 1, the image of the polygon is congruent to the polygon.

• If a is greater than 1, the image of the polygon is smaller than the polygon.

• If a is between 0 and 1, the image of the polygon is smaller than the polygon.

At a store each notebook has a cost of x dollars. Which situation can be represented by this inequality?

5x < 3x + 2

• The cost of 5 notebooks is greater than the cost of 3 notebooks plus a $2 pen.

• The cost of 5 notebooks is less than the cost of 3 notebooks with a $2-off coupon.

• The cost of 5 notebooks is less than the cost of 3 notebooks plus a $2 pen.

• The cost of 5 notebooks is $2 greater than the price of 3 notebooks.

Which set of ordered pairs represents y as a function of x?

• {(0, 0), (1,2), (1, 2), (2,4), (2, 4)}

• {(0, 0), (1, 1), (2, 4), (3, 9), (3, 16)}

• {(0, 0), (0, 1), (0, 2), (0, 1), (0, 2)}

• {(0, 0), (-1, -0.5), (-2, -1), (-3, -1.5), (- 4, -2)}

Helen had $330 in her savings account when Vince opened a savings account with zero dollars.

•Helen deposited $30 into her account each week for x weeks.

•Vince deposited $50 into his account each week for x weeks.

•The accounts did not earn interest.

Which inequality represents this situation when the amount of money in Helen’s account was greater than the amount of money in Vince’s account?

• 30x < 330 + 50x

• 50x > 330 + 30x

• 30x > 330 + 50x

• 50x < 330 + 30x