Coordinate Plane: Slopes, Parallel and Perpendicular Lines

Vocabulary flashcards covering coordinate geometry concepts including parallel lines, perpendicular lines, adjacent sides of rectangles, and slope-intercept form.

Parallel lines

Lines in a coordinate plane that share the same slope, illustrated by shifting Line $AB$ down 6 units and three to the left to construct line $A'B'$.

Perpendicular lines

Lines that intersect at right angles, which determines the slope required for the adjacent side when constructing a rectangle using Line $AB$.

Slope-intercept form

The linear equation format represented by $y = mx + b$, used to express the equation of line $A'B'$.

Adjacent side

A neighboring side of a geometric figure meeting at a vertex; in Problem 35, the side that must form a right angle with Line $AB$ to construct a rectangle.

Line $A'B'$

The line constructed parallel to Line $AB$ by shifting Line $AB$ down 6 units and three to the left.

Point $A(-4, 3)$

A labeled point on the standard $(x, y)$ coordinate plane that defines an endpoint of Line $AB$.

Point $B(2, 1)$

A labeled coordinate point on the standard $(x, y)$ coordinate plane that defines an endpoint of Line $AB$.