## 30 terms

### absolute value

The distance of a number from zero on a number line.

### slope

The way of describing the steepness of a line, ramp or hill. The ratio of rise to run.

### area

The number of square units needed to cover a surface.

### perimeter

The distance around a polygon

### variable

A letter or symbol that stands for one or more numbers.

### factor

A number that is multiplied by another number to find a product.

### integer

The set of whole numbers and their opposites.

### inequality

A mathematical expression which shows that two quantities are not equal.

### percent

A ratio comparing a number to 100.

### reciprocal

One of two numbers whose product is 1. Also known as the multiplicative inverse of a number.

### multiple

The product of any number and a whole number. The value obtained by repeated addition.

### Order of Operations

The rules for performing operations in expressions with more than one operation.

### like terms

Two or more terms that have the same variable raised to the same power.

### linear

A constant change in x that corresponds to a constant change in y, forming a straight line.

### expression

A mathematical phrase that combines operations, numbers, and/or variables.

### equation

A statement that two expressions have the same value.

### formula

An equation that states a rule or a fact.

### distributive property

The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products. a(b+c)= ab+ac

### rational numbers

Any number that can be written as a ratio, a/b where a and b are integers and b doesn't = 0.

### volume

The number of cubic units needed to fill a space.

### simplify

To rewrite an expression as simply as possible.

### origin

The point where the x-axis and the y-axis intersect on the coordinate plane.

### intercept

The point of a line or curve where it crosses the x-axis or y-axis.

### constant

A value that does not change.

### irrational number

Any number that cannot be written as a ratio, repeating, or terminating decimal.

### coefficient

The number that is multiplied by the variable in an algebraic expression or equation.

### terms

The parts of an expression that are separated by an addition or subtraction sign.

### ratio

a comparison of two numbers by division.

### evaluate

To find the value of a numerical or algebraic expression.

### ordered pair

A pair of numbers used to locate a point on a coordinate plane.
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