2. Which of these is equivalent to
the equation below?
A. l = Aw
Solve for specified variables
Question # 34
B. w = Al
w
l
A
l
=
D.
w
3.4.2 Solve formulas for specified
variables.
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C.
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-b
-b
y −b
=x
m
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Example: Which of these is equivalent to the
equation below?
y = mx + b
y – b = mx
m
m
l=
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3. Which of these is equivalent to
the equation below?
In the solutions there are 2
possibilities. What does x =
and what does b=. So solve
for both to determine the
correct answer.
y = mx + b
A = lw
A. b = (mx)/y
A = bh
A. Ab = h
B. x = y - bm
B. b =
C. b = y - mx
D. x = y/ (mb)
A
h
C. Ah = b
y = mx + b
-mx
D.A − h
-mx
y – mx = b
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4. Which of these is equivalent to
the equation below?
1
A = bh
2
A.
B. A − 2h = b
2A
=h
(b1 + b2 )
A=
1
h(b1 + b2 )
2
B. A − b2 = h
b1
C. A − 2b = h
D.
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1. Which of these is equivalent to
the equation below?
A. A = 2b + 2h
=b
C.
2A
=b
h
A
=h
(b1 + b2 )
D. A −
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1
(b1 + b2 ) = h
2
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1
A.
5. Which of these is equivalent to
the equation below?
8. Which of these is equivalent to
the equation below?
V = bh
A = πr 2
b
=h
V
A.
B. V − b = h
B.
C. Vh
=b
D. A − π = r 2
h
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6. Which of these is equivalent to
the equation below?
9. Which of these is equivalent to
the equation below?
1
T − Pl = b
2
1
Pl
2
T = 2 B + Ph
A.
B. 2T + Pl = b
2(T + b)
=P
l
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C.
T − 2B
=P
h
D.
T
− Ph = B
2
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7. Which of these is equivalent to
the equation below?
10. Which of these is equivalent to
the equation below?
Ax + By = C
y = mx + b
C−B
y=
Ax
B. x =
C.
T + Ph
=B
2
B. T − 2 B − h = P
D.2T − bl = P
A.
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T =b+
C.
A
=π
r2
C. Ar 2 = π
D. V = b
A.
A − r2 = π
x=
A.
CBy
A
B.
C − By
A
mx
b=
y
y −b
=m
x
C. b = y + mx
D. y = C − B − Ax
D. x =
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y
mb
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2
A.
11. Which of these is equivalent to
the equation below?
14. Which of these is equivalent to
the equation below?
A = lw
A = πr 2
l = Aw
A. A − r 2 = π
A
B. w =
l
B. Ar 2 = π
C. l = wA
D.
w=
C. 2 Ar = π
l
A
D.
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A
π
= r2
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12. Which of these is equivalent to
the equation below?
15. Which of these is equivalent to
the equation below?
A=
A. A = 2b + 2h
1
bh
2
A.
A
=h
b
B. A − 2h = b
B. b = Ah
2A
=h
b
C. Ah = b
2A+h = b
D. A − h = b
C.
D.
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13. Which of these is equivalent to
the equation below?
16. Which of these is equivalent to
the equation below?
1
A − (b1 + b2 ) = h
2
B.
A
=h
(b1 + b2 )
C.
A − b2
=h
b1
D.
A = bh
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A=
A.
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1
h(b1 + b2 )
2
V = bh
A.
V
=0
bh
B. V − b = h
C.
2A
= (b1 + b2 )
h
V
=h
b
D. Vh = b
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3
17. Which of these is equivalent to
the equation below?
A.
T+
1
Pl = B
2
T = B+
1
Pl
2
20. Which of these is equivalent to
the equation below?
A. b =
1
B. B = T − 2 Pl
B.
y = mx + b
mx
y
y +b
=m
x
C.
2(T + B )
=P
l
C. b = y − mx
D.
2T − Bl = P
D. x =
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C.
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18. Which of these is equivalent to
the equation below?
Answers question # 34
Equivalent Formulas
T
=r
4π
A.
B.
worksheets
y
mb
T = 4πr 2
1. D
5. D
9. C
13. D
17. B
T
−2 = r
4π
T
=r
4π
2. D
6. A
10. B
14. D
18. A
3. B
7. C
11. B
15. A
19. A
4. A
8. B
12. C
16. C
20. C
T
D. 8π = r
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19. Which of these is equivalent to
the equation below?
A.
T − Ph
=B
2
B.
T − 2B − h = P
C.
T + 2B
=P
h
T = 2 B + Ph
D. T − Ph = B
2
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4