How do you solve for y in the equation x+y=0? Algebra Graphs of Linear Equations and Functions Slope-Intercept Form 1 Answer Alan P. Apr 29, 2015 x+y=0 Subtract x from both sides x+y−x=0−x y=−x Answer link Related questions What is Slope-Intercept Form? How do you find the "m" and "b" of any linear equation? How do you determine the slope and y intercept when given a graph? Why is slope "rise over run"? How do you find the slope and y intercept of 2x+5=y? What is the slope and y intercept of y=x? What is the slope and y intercept of y=3.75? How do you write 7+35x=y in slope intercept form? How do you write −5x+12=20 in slope intercept form? How do you write an equation in standard form for a line that goes through (5, –2) and (–5, 4)? See all questions in Slope-Intercept Form Impact of this question 2802 views around the world You can reuse this answer Creative Commons License