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10 cards from this deck
Situation where one quantity changes at a constant rate
y=mx+cy = mx + cy=mx+c
Gradient (rate of change)
Y-intercept (starting value)
Linear model showing how total costs depend on quantity
Constant amount that doesn't change (y-intercept)
Amount that increases with each unit (gradient × quantity)
Moving away from reference point (distance increasing)
Moving towards reference point (distance decreasing)
Speed (always positive)
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