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Pearson Geometry Common Core, 2011

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Pearson Geometry Common Core, 2011 View details

8. Slopes of Parallel and Perpendicular Lines

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Exercise 24 Page 202

How do you know if lines are parallel?

No, see solution.

Practice makes perfect

Lines are parallel if their slopes are identical. Let's write each equation in slope-intercept form, highlighting their slopes.

Given Equation	Slope-Intercept Form	Slope
y-7x=6	y= 7x+6	m_1= 7
y+7x=8	y= -7x+8	m_2= -7

Since the slopes of the given lines are not identical, the lines are not parallel.

Subchapter links

Lesson Check p.201

Practice and Problem-Solving Exercises p.201-204

Standardized Test Prep p.204

Mixed Review p.204