How do you find the slope and y-intercept of x=-6? Algebra Graphs of Linear Equations and Functions Slope 1 Answer Jacobi J. Jul 22, 2018 Undefined slope, no #y#-intercept Explanation: #x=-6# graphs as a vertical line, which has an undefined slope. This line has no #y#-intercept since it never touches the #y#-axis. 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 2442 views around the world You can reuse this answer Creative Commons License