LESSON READ-THROUGH
by Dr. Carol JVF Burns (website creator)
Follow along with the highlighted text while you listen!
Thanks for your support!
PRACTICE (online exercises and printable worksheets)
DEFINITIONS:
A function $\,f\,$ increases on an interval $\,I\,$
if and only if
whenever $\,a < b\,$ in $\,I\,$,$\,f(a) < f(b)\,$.
A function $\,f\,$ decreases on an interval $\,I\,$
if and only if
whenever $\,a < b\,$ in $\,I\,$,$\,f(a) > f(b)\,$.
Roughly: increasing means going strictly UPHILL,as you move from left to right on a graph decreasing means going strictly DOWNHILL,as you move from left to right on a graph
Master the ideas from this section
by practicing the exercise at the bottom of this page.