How do you change 3x+y=15 into slope intercept form? Algebra Graphs of Linear Equations and Functions Slope-Intercept Form 1 Answer Joe D. Apr 2, 2015 Slope-intercept form is: y = mx + n Simply subtract 3x from each side of the equation and: y = -3x + 15 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+\frac{3}{5} x=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 5423 views around the world You can reuse this answer Creative Commons License