10/3/2016
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Lesson 4: More About Linear Equations
Algebra 2 A Unit 3: Functions, Equations, and Graphs
Objectives:
Derive the equation of a line given its slope and a point on the line; Write an equation of a line given two points on the line; Write the equation of a line in different forms
What Do You Remember?
This lesson builds on the following skills:
Determine the equation of a line.
Identify an equation in pointslope form.
PointSlope Form interactive review
Equations in SlopeIntercept Form interactive
review
Select the images and complete the PointSlope Form and the Equations in SlopeIntercept Form interactive reviews.
Check to See if You're Ready.
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1. Do you think you are ready to start the lesson? Choose the option that best describes howcomfortable you are with the skills on this slide.

10/3/2016Do you think you’re ready to start the lesson?...2/8Linear EquationsHave you ever noticed the sets of numbers on the speedometer in a car? Why are there twosets? In the United States, vehicle speed in measured in miles per hour, which is representedwith one set of numbers. Other countries, such as Canada, Australia, and New Zealand,measure speed in kilometers per hour. Looking at the speedometer on this page, a speed of65 mph registers about 105 km/h. Just as there are different forms to display the same speed,there are also different forms in which to write linear equations. In this lesson, you willcontinue to explore lines and learn to write the different forms of linear equations. You willalso explore linear relationships involving parallel and perpendicular lines.ObjectivesDerive the equation of a line given its slope and a point on the lineWrite an equation of a line given two points on the lineWrite the equation of a line in different formsKey Wordsparallel linesperpendicular linespointslope formstandard form of a linear equationRelated SlopesGiven a line, what do you know about any line parallel to that line? How about a line that is perpendicular to the given line? Now click on thelink below to complete the Solve It! for Chapter 2, Lesson 4 from the PowerAlgebra website. During the activity, think about the slopes of thelines and how they relate to each other.Solve It!You have probably already figured out that the slopes of parallel lines are the same. What about the slopes of perpendicular lines? Suppose

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- Winter '13
- Kramer
- Algebra, Equations, Slope, Related Slopes