Question

How do you write an equation in standard form for a line which passes through (3, 6) and (0, -3) ?

Answer 1

`y=3x-3`

Equation of a line is `y=mx+c`
The first point `y=6, x=3` gives `6=3m+c`
The second point `y=-3, x=0` gives `-3=c`
Substituting for c for the first point gives `m=3`