2.1 Types of Graphs of Functions.


(B) Types of graphs of functions.

(a) Linear function: y = mx + c
Highest power of the variable x is 1.
(iy = mx + c, m > 0
(ii) y = mx + c, m < 0



(b) Quadratic function: y = ax2 + bx + c
Highest power of the variable x is 2.
(iy = ax2 + bx + c, a > 0
(ii) y = ax2 + bx + c, a < 0



(c) Cubic function: y = ax3 + bx + c
Highest power of the variable x is 3.
(i) y = ax3 + bx + c, a > 0

(ii) y = ax3 + bx + c, a < 0


(d) Reciprocal function: y= a x  
Highest power of the variable x is –1.