How do you find the slope of the line that passes through (3,b), (-5,b)? Algebra Graphs of Linear Equations and Functions Slope 1 Answer smendyka Mar 7, 2017 Because the y value for both the points is the same these two points define a horizontal line with equation y = b. The slope of a horizontal line by definition is; 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 1219 views around the world You can reuse this answer Creative Commons License