Question

How would you write 0.3y + 1.2 = –0.4x in standard form? How would you write 0.3y + 1.2 = –0.4x in standard form? @Mathematics

Answer 1

Standard form is y=mx+b

So all we have to do is put the y on one side of the equal sign, alone.

0.3y+1.2=-0.4x
*subtract 1.2*

.3y=-0.4x-1.2
*divide .3y by .3, to get the y alone*

y= -(.4x/.3) -(1.2/.3)
*simplify*

y= -.4x/.3 - 4 ((because -1.2/.3 = -4)

Answer 2

Or you could write the final answer as
y= -.4/.3 x - 4
if you want it to look even more like standard form. Although it's really the same thing, and you should get credit for either. It's only a very subtle insignificant difference.