Question

How do you write an equation of a line that goes thru (2,-1) and has slope m=3?

Answer 1

`(y+1) = 3(x-2)`

Explanation:

The general slope-point form for a linear equation with slope `m` through a point `(hatx,haty)` is
`color(white)("XXXX")` `(y-haty) = m(x-hatx)`
Substituting the given values for `m` and `(hatx,haty)` gives the answer above.