Determine whether a relationship is proportional from a table, graph, equation, or context.
Compare contexts for proportionality
Problem
Classify each situation as proportional or not proportional.
Situation A: Apples cost \(\$3~\text{per}~\text{pound}\). Situation B: A game room charges a \(\$5~\text{entry}~\text{fee}\) plus \(\$3~\text{for}~\text{each}~\text{game}~\text{played}\).
Big Picture
What this problem is really about
Both situations contain a repeated per-unit rate, so the decisive difference is what happens before any units are purchased or used. We’ll translate each context into a cost rule, substitute zero pounds or zero games, and check for a remaining fixed amount. Only a rule with constant multiplication and a zero start meets the proportionality test.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
