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8th Grade Math PSSA - VOCAB

Authored by Kristyn McCrohan

Mathematics

6th - 8th Grade

Used 7+ times

8th Grade Math PSSA - VOCAB
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8 questions

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1.

MATCH QUESTION

1 min • 1 pt

Systems of Equations

Match the following:

Finding how many solutions there are just by looking at the equations in y=mx+b

Inspection

Finding the solution of by replacing a variable in one equation for what the variable equals

System of linear equations

any ordered pair that makes all equations in the system true

Solution of a system of linear equations

two or more linear equations that use the same variables

Graphing

Finding the solution of a system by where they intersect on a graph

Substitution

2.

MATCH QUESTION

1 min • 1 pt

Bivariate Data

Match the following

A group of data points that follow the same general pattern

Categorical data

A data point that doesn't fit the pattern, far away from the others

Outlier

Data in groups. Ex: colors, sports, music genres, favorite foods

Measurement data / Numerical data

Straight line that best shows the pattern. Should have about the same # of points above and below

Cluster

Data by numbers. Ex: age, months, time, distance

Trend line / Line of best fit

3.

MATCH QUESTION

1 min • 1 pt

Exponents

Match the following:

opposite of an exponent of 2 (ex: 3 is the square root of 9 because 3x3=9)

Cube root

the square of an integer (1, 4, 9, 16, 25, 36, 49, 64, 81, 100)

Perfect square

opposite of an exponent of 3 (ex: 2 is the cube root of 8 because 2x2x2=8)

Perfect cube

the cube of an integer (8, 27, 64, 125)

Square root

4.

MATCH QUESTION

1 min • 1 pt

Exponents

Match the following:

When you have an exponent raised to a power, keep the base and MULTIPLY the exponents

Product rule

a number that when written as a decimal it does not end or repeat (ex: 2.3587409873652974…)

Scientific Notation

multiply 2 powers with the same base, keep the common base and ADD the exponents

Irrational number

_ x 10^exponent 

where the first number is between 1-10 (one digit before the decimal)

Power rule

5.

MATCH QUESTION

1 min • 1 pt

Slope

Match the following

y=mx+b

m is slope

b is y-intercept

Y-intercept

the point on the graph where the line crosses the x-axis (what is x when y=0)

Slope of a line

the change in y divided by the change in x (or rise over run)

Slope intercept form

the point on the graph where the line crosses the y-axis (what is y when x=0)

X-intercept

6.

MATCH QUESTION

1 min • 1 pt

Functions

Match the following:

the y-intercept of a graph, the output when the input is 0

Initial Value

relation in where each input has exactly one output, x values CAN'T repeat with different y values

Output

Y values

Nonlinear function

X values

Input

a function whose graph is not a straight line

Function

7.

MATCH QUESTION

1 min • 1 pt

Pythagorean Theorem

Match the following:

in right triangles, the sum of the squares of the lengths of the legs = the square of the hypotenuse

Pythagorean Theorem formula

if the pythagorean theorem works for a triangle, then it is a right triangle!

Pythagorean Theorem

long diagonal side of a right triangle that is across from the right angle

Leg

short sides of a right triangle that are touching the right angle

Converse of the Pythagorean theorem

Hypotenuse

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