1. Solve

solved

2. $4x-5y=6$

$5y=4x-6$

$y=\frac{4}{5}x-\frac{6}{5}$

$m_1=\frac{4}{5}$

$m_2=-\frac{5}{4}$

Equation of the line through (1, -2) is:

$y+2=-\frac{5}{4}(x-1)$

$4y+8=-5x+5$

$5x+4y+3=0$