Answer
The y-intercept is (0,-2) and the slope is 4/9.
Work Step by Step
We know that $y=mx+b$, where m is the slope and b is the y-intercept. Using this, we find that the equation in slope intercept form is:
$$ -9y=18-4x\\ y=-\frac{18-4x}{9}$$
The y-intercept is (0,-2) and the slope is 4/9.