4/23: STAAR Review

1. 1. The water level in a tank is changing at a constant rate. The graph shows the relationship between time in hours, x, and the water level in meters, y.

​

Complete the statement that describes the rate of change of the water level with respect to time.

Move the correct answer to each box. Not all answers will be used.​

The water level ​ (a)   at a rate of ​ (b)   m/h.

• decreases
• .25
• increases
• 1
• 4

A part of a linear function is shown on the grid.

What is the range of the linear function shown?

Choose the correct answer from each drop-down menu to complete the sentence.

The range is the set of all real numbers ​ (a)   and ​ (b)   .

• greater than -4
• less than -4
• equal to -4
• less than or equal to 2
• greater than 2
• less than 2

• x
• y
• 0
• 0.75
• 12
• 16

4. 4. A customer is ordering hats and t-shirts from an online store. Each hat costs $7, and each t-shirt costs $10. The customer receives free shipping in the amount of the order is over $100.

4. Write an inequality that represents all possible combinations of hats, x, and t-shirts, y, in an order that qualifies for free shipping.

Move the correct answer to each box. Not all answers will be used.

​ (a)   ​ x + ​ (b)   y ​ (c)   ​ (d)  

• 100
• 7
• 17
• 10
• >
• <
• =

• -3
• -2
• 8
• 3

• -9
• 3
• 0
• -3
• 9

9. 9. The graph of a quadratic function is shown.

Which values best represent the zeros of the function?

Select TWO correct answers.

A sample of a substance with an initial mass of 963 grams is decaying at a rate of 27% per hour.

Create a function that can be used to find y, the mass of the substance in grams remaining after x hours.

Enter your answer in the space provided.

Mathematical Equivalence

ON

Tags

A1.5.9.C