Question

Write in standard form the equation of the line that has a slope of 2 and that passes through ( 3, -1) explain please!

Answer 1

Standard form.

$y=mx+n$

Where m is the slope and n is the point where x=0. Then, you have,
$y=2x+n$


To obtain n use the point they give you,

$-1=2(3)+n$

So n=-7 and then

$y=2x-7$