Answer:
Y intercept= 1
Step-by-step explanation:
First you need to put this in slope intercept form (y=mx+b) so heres the steps:
y+2x-1=0 (given)
y-1=-2x (subtract 2x from both sides)
y=-2x+1 (add 1 to both sides)
y=-2x+1 is the y=mx+b form
The y intercept is b so your answer is 1