Question

Can someone please explain to me relative maximums and minimums and how to find them (on a graph) in English?

Answer 1

are you in calculus?

if so take the derivative of the equation of the line, the derivative is the equations slope, where the slope is zero ie: flat there might be a relative maximum or minimum.

Answer 2

there might also be a maximum or minimum at the boundaries of a curve, so check those to

Answer 3

absolute max and min are the highest and lowest points on a curve in a set boundary