8th grade vocabulary part 1

A symbol for an unknown number - usually expressed as a letter

A line that intersects (crosses) two or more lines in a given plane

A transformation created proportionally by enlarging or reducing a figure

A transformation created by reflecting (flipping) an image over a line

A flat, 2D surface that goes in all directions forever

One of three equal factors (multiplication) of a number - it is the side of a cube

Having the same size and shape

A decimal that repeats a digit or group of digits forever.

A linear equation written in the form y=mx+b, where m represents slope and b represents the y-intercept

A method of writing very large or very small numbers using powers of 10

The symbol used to represent the non-negative square root of a number

The y-coordinate of a point where a graph crosses the y-axis

A function (equation) whose graph is NOT a straight line

A relationship from one set (domain) to another set (range) that assigns exactly one domain to one range

A function (equation) whose graph is a straight line

A # that can be expressed as a ratio (fraction) of two integers-terminating & repeating decimals are considered rational

A decimal number that ends or terminates

Points where the line crosses the x-axis and the y-axis

An equation that makes a straight line when it is graphed - also called a linear function

A period of time between two events or points in time

The original image before transformation

Moving a shape so that it is in a different position, but still have the same size, area, angles, and line lengths

All whole numbers (both positive and negative) and zero

A transformation made by rotating (turning or spinning) a figure around a given point

A transformation created by sliding an object

Operations that undo each other

One of two equal factors (multiplication) of a number - it is the side of a square

The side opposite the right angle - it is also the longest side of a right angle

A convincing demonstration that a mathematical statement is true

The number that is multiplied by (in front of) the variable in an algebraic expression

A square of a whole number/integer

A number that can NOT be expressed as a ration of two integers or as a repeating or terminating decimal - Pi for example

An input-output relationship that has exactly one output (y-value) for each input (x-value)

An equation stating that two ratios are equal

A figure resulting from a transformation

y=mx+b the staring amount or y-intercept of the graph

An angle formed outside a polygon by extending one of its sides

A rate that describes how one quantity changes in relation to another

A measure of the steepness of a line on a graph - m - rise over run - pattern of the y-outputs

Terms with exactly the same variable factors in a variable expression