The gradient of a straight line is how steep it is. It can be calculated from a given set of coordinate points. There are three special cases of straight lines: parallel, horizontal and vertical.

Inequalities that use \(\textless\) or \(\textgreater\) symbols are plotted with a dashed line to show that the line is not included in the region. Inequalities that use ≤ or ≥ symbols are plotted ...

Students in Wendi O’Brien’s eighth-grade math classes at Notre Dame Elementary School in Munson Township recently participated in an ‘Algebra walk’ where they created human graphs on a coordinate ...