What is the slope of y=-4y=−4? Algebra Graphs of Linear Equations and Functions Slope 1 Answer smendyka Jun 18, 2017 y = -4y=−4 is a horizontal line. For each and every value of xx; yy is equal to -4−4. By definition, a horizontal line has a slope of m = 0m=0 Answer link Related questions What is Slope? How can slope be undefined? How do you calculate slope from a graph? How do you calculate the slope given two points? How does a positive slope differ from a negative slope? How does change in the slope affect the steepness of a line? Why is the slope of a horizontal line is zero? How do you determine the slope of (3, –5) and (–2, 9)? How do you determine the slope of (1/3, 3/4) and (–2, 6)? How do you determine the slope of (2,7) and (7,2)? See all questions in Slope Impact of this question 966 views around the world You can reuse this answer Creative Commons License