1. CHAPTER 1 1-6 SOLVING FOR A VARIABLE

2. OBJECTIVES STUDENTS WILL BE ABLE: Solve a formula for a given variable. Solve an equation in two or more variables for one of the variables.

3. 1-6 S OLVING FOR A VARIABLE What is solving for a variable? Answer: It means that we rearrange a formula by inverse operations so we can isolate the requested variable. What is a formula? Answer: formula is an equation that states a rule for a relationship among quantities. An example of this can be: Athletes competing on racing. This athletes can rearrange the distance formula(d=r*t) to find get the time it took to finish the race.

4. S TEPS FOR SOLVING VARIABLES Solving for a Variable Step 1 Locate the variable you are asked to solve for in the equation. Step 2 Identify the operations on this variable and the order in which they are applied. Step 3 Use inverse operations to undo operations and isolate the variable.

5. E XAMPLE 1

6. E XAMPLE 1 CONTINUE

7. E XAMPLE 2

8. E XAMPLE 3

9. E XAMPLE 4

10. E XAMPLE 5

11. E XAMPLE 6 Solve A = ( 1 / 2 ) ah – ( 1 / 2 ) bh for h Solution:

12. S TUDENT G UIDE Do odd problems 14-28 from page 52

13. H OMEWORK Do even problems 14-28 from page 52

14. C LOSURE Today we saw how to solve for a specific variable in an equation. Tomorrow we are going to continue with 1-7