8.2.4.1

Use linear equations to represent situations involving a constant rate of change, including proportional and non-proportional relationships.

Example Problems
Apples are on sale for $3.12 per kilogram.

Is the total cost of the apples
proportional to the total mass?
A freight train carries c containers weighing w tons each and k pallets weighing q tons each, for a total load of L tons.
Write an equation that relates c, w, k, q, and L.
A restaurant sells g gourmet burgers at s dollars each and p plates of pasta at t dollars each, earning L dollars in lunch revenue.
Write an equation that relates g, s, p, t, and L.
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