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Finding Equations of Parallel and Perpendicular Lines

Academic

Vocabulary

Vocabulary

A number that indicates the precise position of a point or other geometric element; when using a grid, the first coordinate indicates the position on the x axis (typically horizontal) and the second indicates the position on the y axis (typically vertical).

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

A relation, such that each element of a set (the domain) is associated with a unique element of another (possibly the same) set (the codomain).

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

When a line goes down and to the right.

Two lines in a plane that never intersect or meet.

Two lines in a plane that form congruent adjacent angles; all of the angles created by the intersection of perpendicular lines are called right angles.

When a line goes up and to the right.

A quadrilateral with four congruent angles, all of which are equal to 90ยบ.

Measurement of the steepness of a line.

A proposition (or problem) that has been proven, or is to be proven, using explicit assumptions.

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.