8th Grade PSSA Math Review

Graphs

100

This type of graph would be a straight, constant line?

Linear Graph

200

This type of graph is not straight, but curves.

Non-linear graph

300

This type of graph is straight, has a constant rate, and goes through the origin at (0,0).

Proportional Graph

400

If you wanted to make a shape larger or smaller on a graph, you would preform what type of transformation?

Dilation

500

If you wanted to move a shape up/down/left/right, what type of transformation would you use?

Translation

Functions

100

For a table to be a function, what cannot repeat?

x values or the domain values

200

What is the name of the test we use to determine whether a graph represents a function or not?

Vertical Line Test

300

Which of the following represents a function?

a. y= 2x^3 +10

b. y= 2x + 7

c. x= 2

d. y= x^2 

B. 

400

John has a coupon for $5 off his total purchase at the candy store. If John buys lollipops for $1.25 for each what equation would best model John's total purchase

a. y= 5x - 1.25

b. y= 1.25x + 5

c. y= -5x - 1.25

d. y= 1.25x - 5

d. y= 1.25x - 5

500

Libby is studying bacteria in a lab. She starts with 300 cells in a dish and everyday, 90 more cells are added to the dish. 

In the given situation, which number represents the y-intercept or "b" of the equation?

300

it's the starting number

Laws of Exponents

100

Write the following in expanded form and solve: 6^3

6x6x6= 216

200

Simplify the following expression:

x^9 * x^8

x^17

300

Simplify the following:

(x^5 y^4 z)^2

x^10 y^8 z^2

400

Simplify the following expression:

(6^2 x^7 y^2)^0

1x1x1 = 1

500

x^7 y^10 z^5

divided by

x^2 y^6 z

x^5 y^6 z^4

Types of Numbers

100

Which of the following is an irrational number?

a.  5.12

b.  3/4

c.  9.12345566543....

d. 3^2

C.  9.12345566543....

200

Which of the following is a rational number?

a.  2^5

b.  1/3

c. Pi 3.141.....

d.  492.12423455....

a. 2^5 = 32

300

"Pi" is considered what "type" of number?

irrational because it never ends

400

Which of the following is an "integer"

a. 3.14

b. 18

c. 90.5%

d. square root of 11.5

B. 18

integer is a whole number

500

Convert 0.2 to a percent

20%

Evaluating Functions

100

What is the value of  x + y  

if x = 18 and y= 6

24

18 + 6= 24

200

What is the value of:    2x + y + z   

 if  x= 10     y= 7    z= -2

25

300

Evaluate: a^2 + b^3 when a = and b = 8

561

400

If x^3 = 64

what is the value of x?

a. 4

b. 8

c. 21

d. 262

a. 4

4x4x4= 64

500

What is the value of  2x^3 -7x +2y

if x= -4 and y= -3

-106