SlideServe
Télécharger Obtenir Pro
Menu
Accueil Pro
Préférences
ApparenceLight Aide et commentaires
© SlideServe · v2026

Parallel and Perpendicular Lines

uriah-reilly avatar
uriah-reilly
5 diapositives · 387 Views · Nov 07, 2014

Parallel and Perpendicular Lines. From Intermediate Algebra. Equations of lines to Remember. Slope-Intercept Form. Useful for graphing since m is the slope and b is the y- intercept. Point-Slope Form. Use this form when you know a point on the line and the slope

Parallel and Perpendicular Lines - slide 1
01 / 5Parallel and Perpendicular Lines
1 / 17

Télécharger la présentation

Parallel and Perpendicular Lines
Une image / un lien ci-dessous est fourni (tel quel) pour télécharger la présentation

Politique de téléchargement : le contenu du site vous est fourni TEL QUEL pour votre information et votre usage personnel ; il ne peut être vendu, concédé sous licence ni partagé sur d’autres sites sans l’accord de son auteur.Le contenu vous est fourni TEL QUEL, pour votre information et votre usage personnel uniquement. Téléchargez la présentation en cliquant sur ce lien. Lors du téléchargement, si vous ne parvenez pas à télécharger une présentation, l’éditeur a peut-être supprimé le fichier de son serveur.Pendant le téléchargement, si vous ne parvenez pas à obtenir une présentation, le fichier a peut-être été supprimé par l’éditeur.

F I N

Plus de contenu associé

Transcription de la présentation

  1. Parallel and Perpendicular Lines

  2. From Intermediate Algebra Equations of lines to Remember Slope-Intercept Form • Useful for graphing since m is the slope and b is the y-intercept Point-Slope Form • Use this form when you know a point on the line and the slope • Also can use this version if you have two points on the line because you can first find the slope using the slope formula and then use one of the points and the slope in this equation. General Form • Commonly used to write linear equation problems or express answers

  3. Parallel and Perpendicular The slope is a number that tells "how steep" the line is and in which direction. So as you can see, parallel lines have the same slopes so if you need the slope of a line parallel to a given line, simply find the slope of the given line and the slope you want for a parallel line will be the same. Perpendicular lines have negative reciprocal slopes so if you need the slope of a line perpendicular to a given line, simply find the slope of the given line, take its reciprocal (flip it over) and make it negative.

  4. Let's look at a line and a point not on the line Let's find the equation of a line parallel to y = - x that passes through the point (2, 4) y = - x What is the slope of the first line, y = - x ? (2, 4) 1 This is in slope intercept form so y = mx + b which means the slope is –1. So we know the slope is –1 and it passes through (2, 4). Having the point and the slope, we can use the point-slope formula to find the equation of the line -1 2 4 Distribute and then solve for y to leave in slope-intercept form.

  5. What if we wanted perpendicular instead of parallel? Let's find the equation of a line perpendicular to y = - x that passes through the point (2, 4) y = - x (2, 4) The slope of the first line is still –1. The slope of a line perpendicular is the negative reciporical so take –1 and "flip" it over and make it negative. 1 2 4 Distribute and then solve for y to leave in slope-intercept form. So the slope of a perpendicular line is 1 and it passes through (2, 4).