If the line \overrightarrow{x}(t) = (8, 9) + t (8, 6) is orthogonal to the line \overrightarrow{x}(r) = (0, 7) + r (-18, k) then k =
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Step 1: The direction vectors of the two lines are $(8,6)$ and $(-18,k)$. Show more…
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