Direct variation
A proportional relationship means one quantity is always a constant multiple of another, like y = 3x, so when x = 4, y = 3(4) = 12, and its graph is always a straight line that passes through the origin (0, 0).
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Midterm
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This final covers a lot of topics, so it's split into 2 parts. Each part includes a question from every one of its topics.
Final, Part 1 of 2
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Final, Part 2 of 2
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