9-4 Solve It!
This problem is
like the one in
Lesson 8-3, but
here you need to
find numerical
values.
You are finishing a stained glass hanging that your
friend has started. You have enough supplies to
add 6 ft2 to the hanging. You are planning to add
the same amount to the length and width. What
will be the dimensions of the hanging when you
are finished? How do you know?
x
2 ft
x
3 ft
9-4 Lesson Quiz
1. What are the solutions of the equation (5x 2 2)(x 1 6) 5 0?
2. What are the solutions of the equation x2 1 5x 1 6?
3. What are the solutions of the equation 2x2 1 7x 5 4?
4. The frame around a rectangular picture
has a uniform width. The dimensions
of the picture are 5 in. by 7 in. If the
combined area of the picture and the
frame is 80 in. 2 , what is the width of the
frame?
7 in.
5 in.
x
x
5. Do you UNDERSTAND? You are solving an equation to
find the best length for a table you are designing. You have
factored the equation as (x 1 1)(2x 2 3). Will the solutions
of the equation give you two different lengths to choose
from?
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2/26/09 6:04:50 PM
Answers
Solve It
Lesson Quiz
3 ft by 4 ft; explanations may
vary.
1.
2.
3.
4.
5. No; one of the solutions will
be negative, which will be
meaningless in terms of a
length.
0.4, 26
23, 22
24, 0.5
1.5 in.
Prentice Hall Algebra 1 • Solve It/Lesson Quiz on Transparencies
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