3
Algebra 1
Unit 4.2 Solving Literal Equations
NOTES:
Steps:
1. Circle the variable to be solved for.
2. Move any term being added to or subtracted from the circled variable by performing its inverse.
3. Move any term being multiplied to or divided by the circled variable by performing its inverse.
4. Write your answer with the variable solved for on the left of the = sign.
**It may help to plug random numbers in for all variables except the one being solved for.
Examples:
1. d = rt; for t 2. V = lwh; for h 3. I = prt; for p
4. [pic]; for w 5. E = K + U; for K 6. k = m – n; for m
7. P = 2a + b + c; for b 8. [pic]; for b 9. [pic]; for b
Algebra 1 Name_______________________
4.2 Period 1 2 3 4 5 6 7
ASSIGNMENT
|In 1-6, Solve for the indicated variable. C Level |
|1. [pic];for l |2. d = rt; for r |3. I = prt; for r |
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|4. V = lwh; for w |5. [pic]; for h |6. [pic]; for b |
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|In 7-12, Solve for the indicated variable. B Level |
|7. P = 2a + b; for b |8. P = a + b + c; for c |9. P = 2a + b + c; for b |
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|10. E = K + U; for U |11. K = C + 273; for C |12. Vf = Vi + at; for Vi |
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|In 13-18, Solve for the indicated variable. A Level |
|13. [pic]; for c |14. [pic];for b |15. [pic]; for r |
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|16. [pic][pic]; for P |17. [pic]; for C |18. [pic]; for n |
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PRACTICE TEST
|Level C |Level B |Level A |
|1C. Solve for the indicated variable. |1B. Solve for the indicated variable. |1A. Solve for the indicated variable. |
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|I = prt ; for t |S = 2A + 2B + C; for C |[pic]; for c |
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ANSWER KEY
|1. [pic] |2. [pic] |3. [pic] |
|4. [pic] |5. [pic] |6. [pic] |
|7. b = P – 2a |8. c = P – a - b |9. b = P – 2a - c |
|10. U = E - K |11. C = K - 273 |12. Vi = Vf-at |
|13. [pic] |14. b = 6a |15. r = 44p |
|16. P = 2L + 2W |17. [pic] |18. [pic] |
|Practice Test | | |
|1C [pic] |1B C = S-2A-2B |1A c = 23b |
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