Chapter 3 Math Vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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ratio | A comparison of two quantities using division. The ratio of a to b (where b does not equal 0) can be written as a to b, a : b, or a/b.
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rate | a ratio of two quantities with different units.
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unit rate | A rate with a denominator of 1.
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slope | A ratio of the change in y (the rise) to the change in x (the run) between any two points on a line. It is a measure of the steepness of a line.
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proportion | An equation stating that two ratios are equivalent.
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proportional | Two quantities that form a proportion.
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cross products | In the proportion a/b = c/d, where b and d do not equal 0, the products a(d) and b(c) are these.
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U.S. customary system | System of measurement that contains units for length, capacity, and weight.
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metric system | Decimal system of measurement, based on powers of 10, that contains units for length, capacity, and mass.
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direct variation | Two quantities x and y show direct variation when y = kx, where k is a number and k does not equal 0.
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inverse variation | Two quantities x and y show inverse variation when y = k/x, where k is a number and k does not equal 0.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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