Answer
The slope is .5 and the y-intercept is -.25.
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:
$$ -4y=1-2x\\ y=-\frac{1-2x}{4} \\ y=\frac{1}{2}x-\frac{1}{4}$$
Thus, we see that the slope is .5 and the y-intercept is -.25.
