How do you find the slope and intercept of #x+y=9#?
1 Answer
Feb 8, 2017
Explanation:
The equation of a line in
#color(blue)"slope-intercept form"# is
#color(red)(bar(ul(|color(white)(2/2)color(black)(y=mx+b)color(white)(2/2)|)))#
where m represents the slope and b, the y-intercept.
#"Rearrange " x+y=9" into this form"# subtract x from both sides of the equation.
#cancel(x)cancel(-x)+y=9-x#
#rArry=-x+9larrcolor(red)" in slope-intercept form"#
#rArr"slope "=m=-1" and y-intercept "=b=9#