Test #2
2-1
1. Formula- A Equation that states a rule for the relationship between certain quantities.
2-2
2. Solving an Equation- The process of finding all values of the variable that make the equation a true statement.
3. Equivalent Equations- Equations that have the same solution.
4. Subtraction Property of Equality- If an equation is true and the same number is subtracted from each side of the equation, the resulting equivalent equation is also true.
5. Multiplication Property of Equality- If an equation is true and each side is multiplied by the same nonzero number, the resulting equation is equivalent.
6. Division Property of Equality- If an equation is true and each side is divided by the same nonzero number, the resulting equation is equivalent.
2-3
7. Multi-Step Equation- Equations with more than one operation.
8. Consecutive Integers- Integers in counting order.
9. Number Theory- The study of numbers and the relationships between them.
2-4
10. Identities- An equation that is true for every value of the variable.
2-5 None
2-6
11. Ratio- A comparison of two numbers by division.
12. Proportion- An equation of the form a/b=c/d, where b≠0, stating that two ratios are equivalent.
13. Means- The middle terms of the proportion.
14. Extremes- In the ratio a/b=c/d, a and d are the extremes.
15. Rate-The ratio of two measurements having different units of measure.
16. Unit Rate- A ratio of two quantities, the second of which is one unit.
17. Scale- The relationship between the measurements on a drawing or model and the measurements of the real object.
18. Scale Model- A model used to represent an object that is too large or too small to be built at actual scale.
2-7
19. Percent of Change- When an increase or decrease is expressed as a percent.
20. Percent of Increase- The ratio of an amount of increase to the previous amount, expressed as a percent.
21. Percent of Decrease- The ratio of an amount of decrease to the previous amount, expressed as a percent.
2-8
22. Literal Equation- A formula or equation with several variables.
23. Dimensional Analysis- The process of carrying units throughout a computation.
24. Unit Analysis- The process of including units of measurement when computing.
2-9
25. Weighted Averages- The sum of the product of the number of units and the value per unit divided by the sum of the number of units represented by M.
26. Mixture Problems- Problems in which two or more parts are combined into a whole.
27. Uniform Motion Problems- Problems in which an object moves at a certain speed, or rate.
28. Rate Problems- Problems in which an object moves at a certain speed, or rate.
2-1
1. Formula- A Equation that states a rule for the relationship between certain quantities.
2-2
2. Solving an Equation- The process of finding all values of the variable that make the equation a true statement.
3. Equivalent Equations- Equations that have the same solution.
4. Subtraction Property of Equality- If an equation is true and the same number is subtracted from each side of the equation, the resulting equivalent equation is also true.
5. Multiplication Property of Equality- If an equation is true and each side is multiplied by the same nonzero number, the resulting equation is equivalent.
6. Division Property of Equality- If an equation is true and each side is divided by the same nonzero number, the resulting equation is equivalent.
2-3
7. Multi-Step Equation- Equations with more than one operation.
8. Consecutive Integers- Integers in counting order.
9. Number Theory- The study of numbers and the relationships between them.
2-4
10. Identities- An equation that is true for every value of the variable.
2-5 None
2-6
11. Ratio- A comparison of two numbers by division.
12. Proportion- An equation of the form a/b=c/d, where b≠0, stating that two ratios are equivalent.
13. Means- The middle terms of the proportion.
14. Extremes- In the ratio a/b=c/d, a and d are the extremes.
15. Rate-The ratio of two measurements having different units of measure.
16. Unit Rate- A ratio of two quantities, the second of which is one unit.
17. Scale- The relationship between the measurements on a drawing or model and the measurements of the real object.
18. Scale Model- A model used to represent an object that is too large or too small to be built at actual scale.
2-7
19. Percent of Change- When an increase or decrease is expressed as a percent.
20. Percent of Increase- The ratio of an amount of increase to the previous amount, expressed as a percent.
21. Percent of Decrease- The ratio of an amount of decrease to the previous amount, expressed as a percent.
2-8
22. Literal Equation- A formula or equation with several variables.
23. Dimensional Analysis- The process of carrying units throughout a computation.
24. Unit Analysis- The process of including units of measurement when computing.
2-9
25. Weighted Averages- The sum of the product of the number of units and the value per unit divided by the sum of the number of units represented by M.
26. Mixture Problems- Problems in which two or more parts are combined into a whole.
27. Uniform Motion Problems- Problems in which an object moves at a certain speed, or rate.
28. Rate Problems- Problems in which an object moves at a certain speed, or rate.