Answer:
y = 2.5x -5
Step-by-step explanation:
To change the form of the equation from standard form to slope-intercept form, solve for y.
20x -8y = 40
-8y = -20x +40 . . . . subtract 20x
y = (-20/-8)x +(40/-8) . . . . divide by 8
y = 2.5x -5 . . . . . . simplify