Concept of slope and formula for slope

Lesson#2
Concept of slope and formula for slope
Q. What is Slope of line?
Concept of slope.
Rise and run Terms.
More rise greater slope.
More run smaller slope.
SLOPE = Rise/Run
It is also called gradient.
Q. What is the Formula to find slope or gradient of a straight line joining two points?
If a non-vertical and non-horizontal line "l" with inclination "a" passes through two points P(x1,y1) and Q(x2,y2), then the slope or gradient "m" of "l" is given by
m=y2-y1/x2-x1 = tan a
Introduction to Analytical Geometry
Chapter No 4
Exercise No 4.3
Mathematics
part 2