Absolute Value
Distance a number is from 0.
Axis of Symmetry
A line that you can flip (or reflect) a graph across that results in the same graph.
Domain
The set of inputs (x-coordinates) of a relation or function.
Exponent
In a power, the number of times the base is multiplied by itself.
Factoring
Rewriting an expression as a product.
Perfect Square
A number that is the square of a rational number.
Quadratic
An expression or equation in which the highest power of a variable has exponent 2.
slope
A number that measures how steep a line is. It shows the amount of change in the height of the line as you go 1 unit to the right. The slope of the line y=mx+b is m.
square-root
A square root of a is a number b whose square is a. That is, b2=a. If b is a square root of a, then so is −b. If a≥0, “the” square root of a, written √a, is the square root of a that is positive or zero.
exponent
In a power, the number of times the base is multiplied by itself.