Answer:
In order to find the y-intercept you need to first get y by itself
To do so we need to divide y by 4, since we divide one side by four we need to divide the other side by 4 also
4y/4=x/4-24/4
y=1/4x-6
Now in the formula y=mx+b, you b is the y-intercept
In y=1/4x-6, the spot filled in for b is -6
Therefore; you y-intercept would be -6
-6
Hope this helps ;)