How do you write the equation of the horizontal line that passes through the point (7,-3)? Algebra Graphs of Linear Equations and Functions Horizontal and Vertical Line Graphs 1 Answer Andrea S. Dec 5, 2016 The equation of a horizontal line is #y=c# and in this case #y=-3# Answer link Related questions What are horizontal or vertical line graphs? What would the #(x,y)# table look like for a horizontal and a vertical line graph? How do you graph #y=4#? What are some examples of when you would see horizontal or vertical line graphs? How do you graph #x=-1#? What is the equation for the x-axis? What is the equation for the y-axis? How do you graph #y=1/2#? How do you graph #x=100#? In which quadrant do the lines #x=3# and #y=-4# intersect? See all questions in Horizontal and Vertical Line Graphs Impact of this question 4131 views around the world You can reuse this answer Creative Commons License