standard_description: Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear. For example, the function A = s2 giving the area of a square as a function of its side length is not linear because its graph contains the points (1,1), (2,4) and (3,9), which are not on a straight line.
problem_activity: Below is a set of coordinate points. Graph these points, connect the points into a linear function, and then graph the inverse of this function.
$${(-2,-4)}$$
$${(1,-2.5)}$$
$${(2,-2)}$$


aligns: no