PSSA 8th Grade Review #1

Order the following numbers from least to greatest.

 $\sqrt{47},\ ^3\sqrt{41},\ \sqrt{31},\ ^3\sqrt{70}$  
Lesson 1-10

•  $^3\sqrt{41},\ \sqrt{31},\ ^3\sqrt{70},\ \sqrt{47}$  

•  $\sqrt{31},\ \sqrt{47},\ ^3\sqrt{41},\ ^3\sqrt{70}$  

•  $\sqrt{31},\ ^3\sqrt{41},\ \sqrt{47},\ ^3\sqrt{70}$  

•  $^3\sqrt{41},\ ^3\sqrt{70},\ \sqrt{31},\ \sqrt{47}$  

Which of the following relations is a function?

Definition of Function

• (8, 1), (-2, 4), (1, 1), (8, 2)

• (1, 4), (-2, 2), (8, 1), (-6, 2)

• (1, 0), (-2, 3), (8, 1), (-2, 5)

• (1, 4), (-2, 6), (1, 3), (-6, 2)

Which of the following best describes the equation below?

y = 2x²+7

Lesson 4-7

• both linear and nonlinear

• neither linear nor nonlinear

• nonlinear

• linear

Which of the following represents a relation that is not a function?

Definition of Function

• (-7, 26), (-3, 24), (-7, 32), (1, 26)

• (7, 26), (-3, 24), (10, 32), (-7, 26)

• (-7, 26), (-3, 24), (7, 32), (10, 26)

• (-7, 26), (-3, 24), (-1, 32), (1, 26)

Which of the following best describes the equation below?
 $y=-\frac{1}{3}x-10$  
Lesson 4-7

• both linear and nonlinear

• neither linear nor nonlinear

• nonlinear

• linear

Yesterday, a local radio station played 94 songs prior to 10 a.m. The station also played 11 songs per hour for the remainder of the day.

If a person listened to the radio station yesterday after noon for x hours, which of the following equations can be used to find the number of songs the person listened to?

Lesson 4-6

• y = 11x

• y = 94x + 11

• y = x + 11

• y = 11x + 94

Compare the rates of change of the items.

Lesson 4-5

• Item II decreases faster.

• Item I decreases faster.

• The items decrease at the same rate.

Which of the following best describes the equation below?
y = 5x + 9 
Lesson 4-7

• both linear and nonlinear

• neither linear nor nonlinear

• nonlinear

• linear

What is the decimal expansion of the following fraction? $\frac{1}{22}$  
 Lesson 1-1

• 0.22

• 1.22

•  $0.04\overline{5}$  

•  $0.0\overline{45}$  

At what position on the number line is the dot located?
Lesson 1-8 and 1-9

• $\sqrt{29}$

• $\sqrt{49}$

• $\sqrt{39}$

• $\sqrt{78}$