STAAR Review #2

Mathematical Equivalence

ON

The side lengths of a triangle and a square are shown in the diagram. The perimeter of the triangle is equal to the perimeter of the square. Determine the value of x and the perimeter of the figures.

The value of x is equal to ​ (a)  

The perimeter of each figure is ​ (b)   centimeters

• 2.5
• 41
• 1.96
• 2.86
• 10.25
• 44

The graph of part of linear function f is shown on the grid.

Write an inequality that represents the domain of the part shown

​ (a)   ​ (b)   ​ (c)   ​ (d)   ​ (e)  

• -1
• x
• 3
• 1
• -3
• 1.5

Mrs. Wilson teaches private voice lessons to middle school choir students. A student's total cost c for v number of voice lessons can be modeled using a linear function. Mrs. Wilson charges her students $23.50 for sheet music and $35 per lesson. A student must take at least 5 lessons but no more than 9 lessons in a school year.

Determine whether each statement is true or false based on the give information.

A mechanic performs oil changes on automobiles. The table shows linear relationships between the number of oil changes completed after different amounts of times.

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

The mechanic completes ​ ​ (a)   oil changes per hour, which represents the ​ (b)   ​ of the linear function

• 3
• rate of change
• 4.5
• y-intercept

A graph of a linear function is shown. What is the zero of this function.

At a barber shop, bottles of shampoo are stored in boxes in the stock room. Each box contains 12 bottles of shampoo. A barber removes 3 bottles of shampoo from 1 box to use at the washing sinks. Write a function the represents the relationship between y, the total number of bottles of shampoo remaining in the stock room, and x, the number of boxes in the stock room. Enter your answer in the space provided.

Mathematical Equivalence

ON