Problem preview
F-IF.3 Warmup M1-021-A04-V01

Recognize sequences, including recursive sequences, as functions whose domains are subsets of integers.

Decide whether a sequence graph represents a function

Problem

Use the plot to determine whether the relation is a function and cite supporting input evidence.

Big Picture

What this problem is really about

Discrete points can represent a function without forming a continuous curve or a straight line. We’ll inspect each plotted input and count how many points occur directly above it; one input at two different heights would be the decisive violation. The evidence should cite the input-output pairings, not the overall shape.

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Four variants of this problem type
Curriculum context
Course
Math I
Standard
F-IF.3
Category
Functions
Domain
Interpreting Functions
Objective
Recognize sequences, including recursive sequences, as functions whose domains are subsets of integers.
Problem type
Decide whether a sequence graph represents a function