Slope intercept for is y=mx+b
So to solve this, get y by itself, and move everything else to the other side of the equation.
3x + 9y = 18
first subtract 3x from each side
9y = 18 - 3x
Then divide each side by 9
y = [tex] \frac{18-3x}{9} [/tex]
Simplify by dividing both 18 and -3 by 9
y = 2 - 1/3x
Rearrange it so that -1/3x comes first
y = -1/3x + 2
ANSWER:
B. y = -1/3x + 2
I hope this helps!
