Slope: Formulas and parallel vs perpendicular.

Lesson's Glossary
Lesson's Content
Vocabulary Highlights
Vocabulary Puzzle

Graph of a number: The location of a point paired with a number in the number line.

Graph of an ordered pair: The location in the coordinate plane associated with an ordered pair of real numbers.

Ordered pair: A pair of numbers for which the order of the numbers is important; (2, -3) is an ordered pair.

Ordinate: The y-coordinate in an ordered pair of the coordinate plane.

Origin: The location of the zero point in a number line.

Parallel lines: Lines in the same plane that do not intersect; nonvertical lines that have the same slope.

Perpendicular lines: Lines that intersect or cross at right angles. Multiplying the slopes of perpendicular lines always yield -1.

Plot a point: Locating and graphing an ordered pair of real numbers in the coordinate plane.

Slope of a line: The measure of how steep a line is. The change in y (rise) divided by the change in x (run). Slope = m

x-intercept: The x-coordinate of a given point for which the graph intersects the x-axis.

y-intercept: The y-coordinate of a given point for which the graph intersects the y-axis.

Slope of a line: The measure of how steep a line is. The change in y (rise) divided by the change in x (run). Slope = m

Slope of a Line

Slope-intercept form of an equation: The equation of a line in the form y = mx + b, where m represents the slope, and be represents the y-intercept.

Slope: Formulas and parallel vs perpendicular.

What is the condition for two graphed lines in the coordinate plane to be parallel, or perpendicular? Is there a way to find out the slope with just two coordinate points? May I determine the slope of a line with just the graph?

You have asked your self these questions several times. This lesson gives your the answers for all of them; making use of colors and in a step by step mode. You will really find it fun and interesting!