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Qualitative Graphs — Linear vs Non-Linear Functions

Linear functions have a constant rate of change (straight line). Non-linear functions have a changing rate (curved or stepped graph).

Grade 8Common Core 8.F.B.5FVerified correct ✓

Worked examples

A graph shows a function. Describe whether the function is linear or non-linear. Explain how you can tell from the shape of the graph. Give one real-world example of each type.
Answer:
A graph shows a function. Describe whether the function is linear or non-linear. Explain how you can tell from the shape of the graph. Give one real-world example of each type.
Answer:

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Interpret Linear Functions — y = mx + b

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