Back to Compare function properties — Problem 2 · Task Set 27

HSF.IF.C.9 Tutor Intake — Comparing Properties Across Representations

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Grade 9·11 problems·~14 min·Common Core Math - HS Functions·group·hsf-if-c-9

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Concepts

A student looks at the graph of Function A and concludes "the maximum
is exactly 4.5." A classmate says "the graph only supports an estimate
of approximately 4.5." Who is correct, and why?

The first student — any point visible on a graph is exact.

The classmate — graph readings are estimates unless the value falls exactly on a labeled gridline.

Both are correct — it depends on how carefully you read the graph.

Neither — you must use algebra to determine the maximum of any function.