Question

Find the slope and the y-intercept: x+ y = 9

Answer 1

\[\large y=\color{red}mx+\color{blue}b\]m is the slope
b is the y-intercept

Get the equation is this form

Answer 2

So, we can easily answer this question by changing its form into y = mx + b. In this form, m is the slope and b is the y-intercept.

x + y = 9
y = -x + 9

So, the slope is -1, and the y-intercept is 9

Answer 3

you should have tried this one on your own, because all you have to do is add -x to both sides to change the equation into slope intercept form

Answer 4

ok...

Answer 5

If you have time, take a look at these videos
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/equation-of-a-line/v/equation-of-a-line-1

Answer 6

so it would be: