For the following functions, think about "How to graph like a math teacher."
Math teachers want to sketch graphs quickly and efficiently and choose
values of x that work "nicely" in the equation and generate integer
values of y, thus making it easier to graph.

- Which points are best found by inspection?
- Which points are best found by substitution?
- Which points are best found by symmetry?

$y = \dfrac{1}{3}x + 7$

$y = \dfrac{2}{7}(x + 4)$

$y = \dfrac{x + 2}{5}$

What are your favorite examples of this?

## No comments:

## Post a Comment