Question

How do you write an equation of the line with slope=-3 passing thru (2,6)?

Answer 1

I found: `y=-3x+12`

Explanation:

You can use the relationship:
`y-y_0=m(x-x_0)`

Where `m` is the slope and `x_0,y_0` the coordinates of your point.
So with your data:
`y-6=-3(x-2)`
`y=-3x+6+6`
`y=-3x+12`
or:
`3x+y=12`