Progressive education was a reaction against traditional forms of public schooling. its proponents advocated greater freedom and spontaneity in play and involvement of children in the social life of the classroom. one of the leaders of this movement

John Dewey

Explanation:

John Dewey is the well known Educator of American Economy as because of the vital contributions he made towards the education of people in the twentieth century.

He laid some important education and social reforms which were progressive and that provided huge benefits to the American Economy.

He later founded the New School for Social Research in the country.

coordinates of r(b,c)

slope of nm is 0.

step-by-step explanation:

the midpoint of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

the midpoint of the line segment nk is given by

∴r(b,c)

the slope of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

slope of rs is

hence

coordinates of r(b,c)

and slope of nm is 0.