Step 1: \ \
\The line equation is
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And the curve equation is
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First find the points of intersection.
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and 
and
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Substitute the
values and solve for corresponding values of
. \ \

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Points of intersections are
and
. \ \
The parabola equation is 
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Vertex of the parabola at
. \ \
Graph the region: \ \
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The parabola equation is
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The limits
,
Each vertical cross section is between top part of parabola and bottom part of parabola : \ \
\Height of cross-section
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The limits
,
Each vertical cross section is between the line of parabola and bottom part of parabola : \ \
\
\ \
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Height of cross-section
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Vertex of the parabola at
. \ \
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Solution: \ \
\
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