While the concept of "parent function" is important in Algebra, I find it's a vocabulary term that often escapes my students. I needed to grab their attention, so I created this "greeting card" to help them see and understand the concept.
May your students never have brain freeze when asked:
What is the parent function for y = 2x + 4?
The closing, "Mathematically Yours," is left for your signature before photocopying the card for your students. Simply sign, copy two-sided, and fold in half... the hamburger way.