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Fitness Tracker: Shared Log Points

Students interpret graph intersections, verify shared ordered pairs, and compare fitness-tracker step and heart-rate estimates.

Grade 8MathInteractive · Printable

Aligned to8.EE.C.8.a

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 8
Subject: Math
Question types: Fill in the blank, Multiple choice, Circle the answer, Short answer, Drawing

About this worksheet

What students practice

Students identify a system's solution as an ordered pair on both linear graphs.
Students connect shared graph points to step-count and heart-rate estimates.
Students use equations and graph evidence to verify or reject proposed solutions.

How to use

Have students use a straightedge to connect each named pair of points. Discuss why a solution must give the same output for the same input.

Curriculum

Common Core standard covered

8.EE.C.8.a

Understand that a solution to a system of two linear equations is a point where their graphs cross.

Preview

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Name Date

Fitness Tracker: Shared Log Points

Use graph intersections to compare two estimates of the same measurement.

Step-Count Estimates

Two tracking methods estimate the same person's step count. Read both axis labels carefully. Connect only the pairs named in each prompt.

For Questions 1–5, x is minutes relative to a saved checkpoint. The y-coordinate is the change in step count from that checkpoint's baseline, in hundreds of steps. Negative values mean before the checkpoint or below the baseline.