Today in class students completed tables of data to show proportionality. The unit rate is the constant of proportionality.
Answers to HW: 1.a. cups of milk, tablespoons of chocolate syrup b. 4 c. 3/2 d. tablespoons of chocolate syrup, cup of milk 2.a. 3/7 cups of red paint b. 3/7 or 0.43 3.a. 21,600 square miles. The area on the map is 24 square inches. Each square inch represents 900 square miles since 30 times 30 = 900. The actual area is 24 times 900 = 21,600 square miles. b. 1 inch to 60 miles. If 21,600 square miles has to be represented by only 6 square inches, then each square inch has to be 21,600/6 = 3,600 square miles. Each side of the inch is 60 because 60 times 60 = 3600. OR you may have thought about 6 square inches is 1/4 of 24 square inches, so each square inch has to represent 4 times as much land area as the first scale.900 times 4 = 3,600, and each side of the square inch is 60. 4. The area of polygon Q is 45 square units, so the area has been scaled by a factor of 9. 9 times 5 = 45. So the scale factor of the original figure had a scale factor of 3 since 3 times 3 = 9
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October 2018
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