Chapter 2 Vocabulary

5. A 3-D model that is similar to a 3-D object.
7. A rate with the second quantity of 1 unit.
10. An equation that is not true for any value of the variable. It has no solutions.
13. An increase given as a percent of the original amount.
14. A ratio of two equivalent measures in different units.
16. To get a variable with a coefficient of 1 alone on one side of the equation.
19. Equations that have the same solutions.
20. An equation with 2 or more variables.
21. The ratio of any length in a scale drawing to the corresponding actual length.

1. The ratio of the amount of change to the original amount.
2. A ratio that compares a number to 100.
3. A equation that states two ratios are equal.
4. The ratio of the absolute value of the difference of the measured value and an actual value compared to the actual value expressed as a percent.
6. A decrease given as a percent of the original amount.
8. A comparison of two numbers by division.
9. An enlarged or reduced drawing similar to an actual object or place.
11. An equation that is true for all values of the variable. It has infinite solutions.
12. An operation that undoes another operation.
15. An equation that states a rule for a relationship among quantities.
17. A ratio of two quantities with different units.
18. Two shapes that have the same shape but not the same size.