Chapter 1/2

5. / two rations that are equal
8. operation / opposite operations that undo each other
9. / lines that insect
13. terms / terms that contain the same variable, matching variables with the same power
14. value / The non-negative value of any real number
15. / A mathematical statement that compares two quantities using <, >, ≤, ≥ or ≠
16. rate / is a comparison of two different quantities when they are combined together
17. equation / formula of equation that contains several variables

1. model / three dimensional reproduction of an item that has been increased or reduced in size
2. / continuing over a period of time
3. Analysis / process of carrying units throughout a computation
4. / symbols used to represent unspecified numbers or variables
6. / comparison of two number by division
7. expression / an expression that contains at least one operation symbols and only numbers
8. / rule for the relationship between certain quantities
10. / a mathematical sentence that contains an equal sign =
11. / how close the measured values are to each other
12. / group of mathematical symbols that express a relationship or that are used to solve a problem
14. / how close a measured value is to the actual value