## Intermediate Algebra (6th Edition)

$f(x)=3x-2$
Using $y=mx+b$ where $m$ is the slope, the given equation, $3x-y=5 ,$ is equivalent to \begin{array}{l}\require{cancel} -y=-3x+5 \\\\ y=3x-5 .\end{array} Hence, the slope is $m=3$. Since parallel lines have the same slope, then $m_p=3$ Using $(-1,-5)$ and $m_p= 3 ,$ the equation of the line is \begin{array}{l}\require{cancel} y-(-5)=3(x-(-1)) \\\\ y+5=3(x+1) \\\\ y+5=3x+3 \\\\ y=3x+3-5 \\\\ y=3x-2 .\end{array} In function notation form, this is equivalent to $f(x)=3x-2 .$