Year 7–8 maths mission

Plan Comparison Lab

A cheaper starting price can become the expensive choice later. Find where that changes.

1 / 4

Preview mode. You can complete the whole mission, but this run is not recorded.

Client brief

Choose a bike courier for the school fundraiser.

QuickWheel$2 × x + $4$4 start + $2 per kilometre

LowRate$1 × x + $10$10 start + $1 per kilometre

Planx=0x=4x=8

QuickWheel$$$

LowRate$$$

Model check

Starting feewhere the line begins

Ratehow much cost rises each step

Intersectionboth plans cost the same

Fill the table from each rule. The starting fee is the cost when x = 0.