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MATH / A line is parameterized by

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problem

A line is parameterized by \[\begin{pmatrix} x \\ y \end{pmatrix} = \begin{pmatrix} 0 \\ 6 \end{pmatrix} + t \begin{pmatrix} 4 \\ -6 \end{pmatrix}.\]A second line is parameterized by \[\begin{pmatrix} x \\ y \end{pmatrix} = \begin{pmatrix} 1 \\ -7 \end{pmatrix} + u \begin{pmatrix} a \\ 9 \end{pmatrix}.\]If the two lines do not intersect, then find a.a.
Plain-text mathematical notation (without MathML)
A line is parameterized by
\[\begin{pmatrix} x \\ y \end{pmatrix} = \begin{pmatrix} 0 \\ 6 \end{pmatrix} + t \begin{pmatrix} 4 \\ -6 \end{pmatrix}.\]A second line is parameterized by
\[\begin{pmatrix} x \\ y \end{pmatrix} = \begin{pmatrix} 1 \\ -7 \end{pmatrix} + u \begin{pmatrix} a \\ 9 \end{pmatrix}.\]If the two lines do not intersect, then find a.
Original LaTeX notation
A line is parameterized by
\[\begin{pmatrix} x \\ y \end{pmatrix} = \begin{pmatrix} 0 \\ 6 \end{pmatrix} + t \begin{pmatrix} 4 \\ -6 \end{pmatrix}.\]A second line is parameterized by
\[\begin{pmatrix} x \\ y \end{pmatrix} = \begin{pmatrix} 1 \\ -7 \end{pmatrix} + u \begin{pmatrix} a \\ 9 \end{pmatrix}.\]If the two lines do not intersect, then find $a.$

level

Level 2

type

Precalculus

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Source and history

task_id
02a10f9b-31fa-5b0a-851f-ffaab22b9bbb
task_key
precalculus--test--02a10f9b-31fa-5b0a-851f-ffaab22b9bbb
task_revision_id
1
config / split
precalculus / test

Official source

initial import