Respuesta :

m=-5/2 is your answer!
To find the slope, get the equation into slope intercept form:

y=mx+b

m stands for slope
b stands for y-intercept

To get your equation like this, subtract 5x from each side.

2y=-8-5x
2y=-5x-8

Finally, divide each side by 2

y=-5/2x-4

Your slope would be -5/2