Question

Y=-3x-9 in standard form

Answer 1

To convert it into standard form (Ax + By = C), we'll want to move all the terms to the left-hand side of the equation:

3x + y + 9 = 0

So, the correct equation in standard form is indeed 3x + y + 9 = 0.

Answer 2

Equations

We're given the following line:

`\bf{y=-3x-9}`

This is standard form:

`\sf{Ax+By=C}`

In order to convert the given equation to standard form, add 3x to both sides:

`\sf{y=-3x-9}` {write the equation}

`\sf{y+3x=-9}` {subtract}

`\sf{3x+y=-9}` <- our equation