Objective: Solve each two-step inequality for the load variable x, then build the full solution graph yourself: drag across the scale to shade the correct ray, and tap the boundary marker to flip it open or closed to match.
Your Judge: Inspector Gruff has weighed ten thousand trucks and trusts none of them. He checks every graph personally — impress him, or hear about it.
Bridge Strain: You begin with 3 Structural Strain points. Any incomplete or incorrect graph drains 1 point. Lose all 3 and the bridge closes to traffic.
Convoy Randomization: Trucks are pulled from a larger inequality bank and shuffled every session.
Progress Disclaimer: This terminal holds session memory only. Reloading or leaving the page wipes the weigh log completely.
Please enter your name before opening the station!
Truck1 / 12
Bridge Strain3 / 3
Score0 PTS
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Let's see what you've got, driver...
Weigh Station Readout — Solve for x
Loading cargo manifest...
Drag the scale to shade the solution ray • Tap the marker to flip Open ↔ Closed
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BRIDGE CLOSED
Structural strain reached zero — no more trucks may cross.
Final Weigh Score: 0 PTS
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🚚 Driver: Student
Progress isn't saved — save this screen now to show your teacher your attempt.
🌉
CONVOY CLEARED
Master Weigh Inspector Distinction Awarded
Excellent work! Every truck was correctly solved and plotted before crossing the bridge — no structural overload, no closures.
Total Score: 1200 PTS
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🚚 Driver: Student
Progress isn't saved — save this screen now as proof of completion for your teacher.