How to find slope:
Divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.
The actual formula for this is: (y2 - y1)/(x2 - x1).
How to find Y intercept
To find the y-intercept, plug 0 in for 'x' and solve for 'y'.
Ex. 2x + 3y = 12
So you plug in 0 for x therefore it becomes:
3y = 12
so, the y intercept is 4
Let me know if this is helpful :)