Vocabulary for Ratios and Proportional Relationships Unit Grade 7
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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| direct variation | A relationship between two quantities such that one quantity changes at a constant rate with the other quantity.
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| rate | A ratio that compares two quantities with different units; it shows how fast or slow something is changing.
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| scale model | A proportional three-dimensional representation of an object.
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| proportion | An equation that states that two ratios are equal.
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| unit rate | A rate that shows the constant rate of change in the units of the numerator for every one unit of the denominator.
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| scale | A ratio that compares the measurements of a drawing or model with the actual measurements of the object.
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| variable | A letter or symbol used to represent an unknown quantity.
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| cross products | A strategy that can be used to solve proportions for an unknown and to determine proportionality.
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| scale drawing | A proportional two-dimensional representation of an object.
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| origin | The graphs of proportional relationships is a straight line that passes through this point, (0, 0).
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| constant of proportionality | The unit rate or slope of a proportional relationship is also called this.
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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.
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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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