Download 1.4 Rewriting Equations and Formulas

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1.4 Rewriting Equations and
Formulas
Solving an equation with more
than one variable.
Solve 7x –3y = 8 for y
-7x
-7x
Subtract –7x from each side
-3y = 8 – 7x
7
8
y  x
3
3
Divide each side by -3
Given the equation x +xy =1
Find the value of y when x = -1
x + xy = 1
xy  1  x
1 x
y
x
1  (1)
y
 2
1
Solve the equation for p2
R  p1 A  p2C
R  p1 A  p2C
R  p1 A
 p2
C
y = -2
Solve the equation for the
indicated variable:
Solve the equation for the
indicated variable:
Solve the equation for the
indicated variable:
Solve the equation for the
indicated variable:
Assignment 1.4
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