Given:
Given two points are (1,-4) and (-2,5)
Equation of line is
[tex]\frac{y-y_1}{y_2-y_1}=\frac{x-x_1}{x_2-x_1}[/tex][tex]\begin{gathered} \frac{y+4}{5+4}=\frac{x-1}{-2-1} \\ \frac{y+4}{9}=\frac{x-1}{-3} \\ \frac{(y+4)}{3}=\frac{x-1}{-1} \\ -y-4=3x-3 \\ 3x+y-3+4=0 \\ 3x+y+1=0 \end{gathered}[/tex]
