7A.7
Compare proportional and non-proportional linear relationships represented in different ways (algebraically, graphically, numerically in tables, or by verbal descriptions) to solve real-world problems. [Grade 8, 10]
Example Problems
Madison needs rolls of wrapping paper.
At the gift shop, they cost $9.60 for 4 rolls. At the discount store, rolls are sold according to the equation , where P is price in dollars and R is number of rolls.
Where do rolls cost less, at the gift shop or at the discount store?
At the gift shop, they cost $9.60 for 4 rolls. At the discount store, rolls are sold according to the equation , where P is price in dollars and R is number of rolls.
Where do rolls cost less, at the gift shop or at the discount store?
Benjamin wants bottled water.
At the convenience store, 6 bottles cost $5.25. At the supermarket, bottles are sold according to the equation , where P is price in dollars and B is number of bottles.
Where does water cost less, at the supermarket or at the convenience store?
At the convenience store, 6 bottles cost $5.25. At the supermarket, bottles are sold according to the equation , where P is price in dollars and B is number of bottles.
Where does water cost less, at the supermarket or at the convenience store?
Mila's guacamole is her specialty.
Avocados are on sale for $4.50 for 3 avocados at the grocery store.
At the gas station, avocados are being sold according to the following equation, where P is price in dollars and A is the number of avocados: .
Where do avocados cost less, at the grocery store or the gas station?
Avocados are on sale for $4.50 for 3 avocados at the grocery store.
At the gas station, avocados are being sold according to the following equation, where P is price in dollars and A is the number of avocados: .
Where do avocados cost less, at the grocery store or the gas station?
Khan Academy ResourcesProportional relationshipsIdentify proportional relationshipsIntro to proportional relationshipsProportional relationships: bananasIs side length & area proportional?Proportional relationships: graphsProportional relationshipsIs side length & perimeter proportional?Proportional relationships: movie ticketsProportional relationships: spaghetti
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