Write the given equation in slope-intercept form. Then identify the slope and the y-intercept for the line. 5x-4y=-20 What is the slope-intercept form of the equation 5x-4y = -20? (Simplify your answer. Type your answer in slope-intercept form.) What is the slope of the line? m= (Simplify your answer.) What is the y-intercept of the line? (x,y) = (Simplify your answer. Type an ordered pair.)