Solve and graph one-step inequalities.
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This lesson is approaching 7.EE.4b and reaches back to sixth-grade standards to revisit inequality concepts before students look at two-step inequalities in the upcoming lessons. Students may use number lines as an optional tool in this and the next few lessons to support their understanding of number comparisons and inequality statements (MP.5).
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An airline allows passengers to bring a suitcase that weighs less than 30 pounds onto the airplane for free. If a suitcase weighs 30 pounds or more, then the passenger will be charged a fee. Elena is going on a trip and is packing her suitcase. Her suitcase weighs 4.8 pounds when it is empty.
Which graph below shows all values of $${x \geq -2.5}$$?
Which graph below shows all values of $${x< -2.5}$$?
For the remaining graph, what inequality represents the solutions shown in the graph?
Graph A:
Graph B:
Graph C:
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The following resources include problems and activities aligned to the objective of the lesson that can be used to create your own problem set.
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Your cat’s vet recommends a diet for your cat of no more than 1,800 calories per week. In a 7-day week, how many daily calories you can feed your cat and still be following the vet’s recommendation?
Write and solve an inequality to represent the situation. Sketch a graph of the solution on a number line.