Pre-Algebra Chapter One Vocabulary

variable : a letter that stands for a number

variable expression : a mathematical phrase that uses variables, numbers, and operation symbols

absolute value : the distance of a number from zero on a number line.

coordinate plane : is a plane formed by two number lines that interest at their zero points.

ordered pair : gives the coordinates and location of a point.

x-coordinate : shows the position right or left of the y-axis.