Question 87706
You must solve for y to determine the slope and y-intercept:

3x - y = 9   


Add -3x to each side:

3x-3x -y=-3x + 9
-y = -3x +9


Divide both sides by -1
{{{(-y)/-1= (-3x)/-1+9/-1}}}
{{{y = 3x-9}}}


Y intercept is -9, and the slope is 3.


R^2  Retired from SCC