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Parallel lines
CONCEPTS
Properties of a Line
• Lines that are parallel have slopes that are = (m₁ = m ₂)
PRACTICE PROBLEMS
Question 1 What line is parallel to y = 3x + 4?
a. 5x + y = 2
b. –3x + y = 4
c. y = 1/3x +
-- Answer -- b
Always put the equation into y–intercept form to find parallel & perpendicular lines
a. y = –5x + 2 => –5 ≠ 3(parallel lines have equal slopes)
b. y = 3x + 4 => 3 = 3 (parallel lines have equal slopes)
c. y = 1/3x + 4 => 1/3 ≠ 3 (parallel lines have equal slopes)
ACT PRACTICE PROBLEMS
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