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**Estimated Time Needed**

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Modeling Situations With Linear Equations

Academic

Vocabulary

Vocabulary

A line that divides a space or a body (entity), often into two symmetric parts; can be vertical or horizontal.

To perform a mathematical process; to determine the solution to a mathematical problem.

Mathematical sentence that compares two expressions linked by an equals sign.

A statement, usually an equation, of a fact, principle, rule, or other logical relationship; often used to solve a problem.

A diagram that exhibits a relationship, often functional, between two sets of numbers as a set of points having coordinates determined by the relationship; also called plot.

A term used to compare two expressions that are linked by less than <, less than or equal to =, greater than >, greater than or equal to =.

The coordinate of a point where a line, curve, or surface intersects an axis.

An algebraic equation, such as y = 2x + 7 or 3x + 2y - z = 4, in which the highest degree term in the variable or variables is of the first degree. The graph of such an equation is a straight line if there are two variables.

Data that form a straight line when graphed.

When a line goes down and to the right.

To use coordinates to locate points or other figures on a graph; to connect points on a graph; to represent data on a graph.

A way of organizing data, usually in the form of columns and rows within a rectangular form.

Letters that represent numbers in algebraic expressions; called variables because the numbers they represent can vary; one or more numbers can be substituted for the letters in an algebraic expression; also referred to as the unknown.

The x-coordinate of a point where a line, curve, or surface intersects the x-axis.

The y-coordinate of a point where a line, curve, or surface intersects the y-axis.