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Ratios And Proportional (Scaling (Solve: The red triangle is 4 from the…
Ratios And Proportional
Y=kx X=Y/K K=Y/x
These equations help solve problems. If you don't know the K (or the constant) you do the equation K=y/x
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Unit Rate
For example, 60 miles in 2 hours is a rate. For example, 30 miles in 1 hour, or 30 miles per hour, is a unit rate.
When rates are a quantity of a single unit, such as 2 karmas per info bell or 5 births per seconds, they are named unit rates. If you have a multiple-unit rate such as 20 students for every 3 info bells and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.
Shmoritos are $4.50/12 oz, while Shmingles are $2.50/7.75 oz.Shmunkin Donuts offers a baker's dozen (12 doughnuts) for $4.94. What is the unit cost?
Scaling
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Ex: If you double something, then the scale factor is 2
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Solve: The red triangle is 4 from the bottom and 5 on the side, and the blue is 8 on the bottom, and 10 on the side.
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