Answer: k = 5
\[\frac{k-(-3)}{4-(-12)}=\frac12\ \Rightarrow\ \frac{k+3}{16}=\frac12\]
\[k+3=8\ \Rightarrow\ k=5\]
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Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
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