Can you help with these problems please

Answer:
[tex]\boxed{y = m(x - x_{1}) + y_{1}}[/tex]
Step-by-step explanation:
[tex]if \: m = \frac{y- y_{1}}{x - x_{1}} \: the \: \boxed{y} \: sgivn \: by \to \\ y - y_{1} = m(x - x_{1}) \\ \boxed{y = m(x - x_{1}) + y_{1}}[/tex]
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