Write an equation in slope intercept form???

-8x =  5 - 4y     let's find the slope of this line......rearrange as

4y  = 8x - 5      divide both sides by 4

y = 2x - 5/4       

The slope of the above line is given by the coefficient in front of x, i.e., 2

Since parallel lines have the same slope......and we're given the point ( 0, - .5)   we can use the point-slope form to write an equation of our line

y - (-.5)   = 2(x - 0)

y + .5   = 2x

y  = 2x - .5    

y = 2x - 1/2       and this is slope-intercept form

Here's the graph of both lines :  https://www.desmos.com/calculator/inkglxyfho