transformation

an operation that maps an original figure onto a new figure

coordinate

is the number that corresponds to a point on the number line

a negative number

is a number less than zero

the opposite of a number

is two numbers with the same absolute value, but different signs

a positive number

is a number greater than zero

the absolute value of a number

is the distance a number is from zero

a translation

is when you slide a figure from one position to another, without flipping it

a reflection

is when you flip a figure over a line of symetry

integer

is any number from the set (...-3, -2, -1, 0, 1, 2, 3...) where ... means continues indefinetly

mean

is the average. to find it, add up all of the addends and divide by the number of addends

quadrant

the x and y-axis seperate the coordinate plane and make four quadrants

additive inverse

an integer, and its opposite

inequality

compares numbers or quantities, using <, or >