Parallel/Perpendicular Lines (Junior Cert Mathematics): Quizzes

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Parallel Lines
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What is the defining characteristic of parallel lines?

They never meet or cross

How does the distance between parallel lines change as you extend them?

It stays the same

What is the relationship between the slopes of parallel lines?

They have the same slope

If two lines are parallel, what can you say about their yy-intercepts?

They are different

In the equation y=2x+3y = 2x + 3, what is the slope?

m=2m = 2

Are the lines y=2x+3y = 2x + 3 and y=2x4y = 2x - 4 parallel?

Yes, they both have slope m=2m = 2

How can you spot parallel lines on a graph?

Same direction and never touch

When checking a graph for parallel lines, what distance pattern should you look for?

Never get closer or farther apart

Which analogy best describes parallel lines?

Train tracks side by side

Which pair of lines would NOT be parallel?

y=3x+1y = 3x + 1 and y=2x+1y = 2x + 1

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