## Algebra 1

$-5x + y = 13$
$y+3 = 5*(x+4)$--same slope, has point (-4, -7) $y+3 = 5*(x+4)$ $y+3 = 5x + 20$ $y+3-3 = 5x +20 - 3$ $y= 5x + 17$ $m = 5$ $-7 = 5*x + b$ $-7 = 5*-4 + b$ $-7 = -20 + b$ $-7 + 20 = -20 + b + 20$ $13 = b$ $y = 5x + 13$ $y-5x = 5x + 13 - 5x$ $-5x + y = 13$