Two or more coordinates are needed to determine the slope of a line
If you mean: y = 12x-23 then the slope is 12 and the y intercept is -23
The Slippery Slope was created on 2003-09-23.
It has no slope.
If you mean a slope of 23 and a point of (0, 4) then the equation is y = 23x+4
Points: (2, 3) and (5, 8) Slope: 5/3
23
Steep Slope Sliders was created on 1997-10-23.
If both lines are parallel then they will have the same slope but with different y intercepts
35
12
If you mean points of (-2, 3) and (-7, -2) then the slope works out as 1