Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Scale factor A number used as a multiplier in scaling. This triangle was multiplied by 4.

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Presentation transcript:

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Scale factor A number used as a multiplier in scaling. This triangle was multiplied by 4 to create this larger scale.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Scale model A model that uses proportional lengths in the model and the actual image. Real Horse 36 in. Model Horse 3 in. Scale= 1:12

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Rule The procedure that a count must follow.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Similar figures Figures are similar if they have the same shape, but are different sizes. These triangles are similar figures because they are both isosceles triangles, but they are different sizes.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Equivalent ratio ©Partners for Learning, Inc. Ratios that have the same value.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Proportion The equality of two ratios written as an equation.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Proportional relationship If one of the related things is multiplied in size by a number (x), then the other thing is also multiplied by x.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Rate A ratio that compares quantities measured in different units.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Corresponding side If the position of two sides is the same in two figures, they are called corresponding sides The sides with orange marks are corresponding sides

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Function A special relationship between values. Each input value results in exactly one output value. Input (x)Output (y)

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Domain of a relation The set of all x-coordinates of the ordered pairs of that relation. Input (x)Output (y)Ordered Pair 05(0,5) 16(1,6) 27(2,7) 38(3,8)

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Ordered pair ©Partners for Learning, Inc. The location of a single point on a rectangular coordinate system where the first and second values represent the position relative to the x-axis and y-axis, respectively.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. X-coordinate The value on the x-axis used to locate a point on the coordinate graph. It is the first number in an ordered pair (x,y).

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Y-coordinate The value on the y-axis used to locate a point on the coordinate graph. It is the second value in an ordered pair (x,y). y-coordinate

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Mathematics Vocabulary - Grade 7 ©Partners for Learning, Inc. Interest Money paid for the use of other money. Sam’s dad loaned him $50 so he could buy a new video game. Sam’s dad said that because he was loaning Sam the money, Sam needed to pay interest of $5. This means that Sam must pay his dad back $55, that includes the loan of $50 plus the interest of $5.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Markdowns A reduction in price used to stimulate sales, dispose of slow moving merchandise or meet the competitors price.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Markups Percentages or dollar amounts added to the cost of a product to arrive at the products selling price. The store buys this TV for $100. The store sells this TV for $399. The markup is $299 or 299%

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Percent decrease The percent of change when the new amount is less than the original amount.

Mathematics Vocabulary – Grade 8 ©Partners for Learning, Inc. Percent increase The percent of change when the new amount is more than the original amount.