Question

Describe how you would graph this line using the slope-intercept method. Be sure to write in complete sentences. 3y=1200−2x
y=400−23x

Answer 1

I suppose those are two different lines?

Answer 2

Did you intend to post y = (2/3)x + 400 ?

Answer 3

For 3y=1200-2x

divide both sides by 3.
1200/3 is your y-intercept. -2/3 is your slope
slope is rise over run. plot a couple of points in each direction. 2 down and 3 right.
and 2 up and 3 left. and draw a line