Question

A straight line supply curve is drawn indicating a non linear supply function.

Answer 1

A non-linear supply function is diagrammatically depicted as curve rather than a straight line, whereas, a linear supply function is diagrammatically represented as straight supply line. Now, since this equation has the highest degree as 1, so it is a linear function.

Answer 2

The non-linear supply function can be depicted as the curve diagrammatically rather than the straight line.

In this case the linear supply function is represented as the straight supply line diagrammatically.

As the equation has a highest degree as 1, it must be the linear function.

Linear function refers to the functions whose graph is the straight line i.e. y = f(x).