How do you write the equation of the line given the slope 2, y intercept (0,9)?

2 Answers
May 14, 2017

#y=2x+9#

Explanation:

Eqn of a line is

#y=mx+c#

where
#m="slope/gradient ";c="y intercept"#

slope #=2#

#=>y=2x+c#

to find#" "c" "# substitute the known coordinates in

#9=2xx0+c#

#9=0+c#

#:.c=9#

so the eqn is

#y=2x+9#

May 14, 2017

#y=2x+9#

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.

#"here " m=2" and " b=9#

#rArry=2x+9larrcolor(red)" in slope-intercept form"#