Sagot :
(y - y₁) = m(x - x₁)
y - y₁ = [tex]\large\mathsf{ \frac{1}{2}}[/tex] (x - x₁)
y - 5 = [tex]\large\mathsf{ \frac{1}{2}}[/tex]x - [tex]\large\mathsf{ \frac{1}{\cancel{2}}}[/tex] × [tex]\mathsf{ \cancel{2}\:\cancel{+}}[/tex]
y = [tex]\large\mathsf{ \frac{1}{2}}[/tex]x - 1 + 1
[tex]\boxed{ \mathsf{y\:=\: \frac{1}{2}x\:+\:y}}[/tex]
[tex]\mathsf{θ\:=\:tan^y\: (\frac{1}{2})\:=\:26°}[/tex]
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