To access your textbook online go to 
https://www.bigideasmath.com
click on "new to big ideas math?"
and enter the access code:

S5SK-PJK5-GSP7

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Khan Academy Math

Virtual Algebra Tiles

Model one step & two step equations, factoring, completing the square and more.

Desmos:  Online Graphing Calculator

Create a Graph

Easy online graph maker