Respuesta:
[tex]a)[/tex]
[tex]m = \frac{3 - 0}{1 - 2} = \frac{3}{ - 1} = - 3[/tex]
[tex]3 = - 3 \times 1 + n \\ 3 = - 3 + n \\ 3 + 3 = n \\ 6 = n[/tex]
[tex]y = - 3x + 6[/tex]
[tex]b)[/tex]
[tex]3 = 5 \times ( - 2) + n \\ 3 = - 10 + n \\ 3 + 10 = n \\ 13 = n[/tex]
[tex]y = 5x + 13[/tex]
