The slope intercept form of a line
is
y = mx + b.
Where m is the slope and b is the
yintercept.
The yintercept is the point where the line crosses the yaxis.
In the example to the right, the line crosses the yaxis at point
(0,3). Therefore b = 3. The slope is 2.The slope intercept equation
is
y = 2x + 3.

