Need some paper with grids for graphing? Click here!
No graphing calculator? Try graphsketch.com and/or desmos.com/calculator
Note that the first site does not handle inequalities, but the 2nd site does!
And here are the instructions for doing quadratic regression with the calculator OR in desmos!
Desmos demo for 2-7: Curve Fitting, pg 142-3 here.
Need a site that will give you a linear regression equation after you enter the data? Click here! After your data is entered, click the ‘Calculate now’ button. This also gives you R-squared, so simply square-root that value for r (the correlation coefficient).
Need to do some matrix calculations and you don’t have a graphing calcuator?
Try this: Click here! Or, this site has a solving capability: Matrix with solving (as if we’d done row reduction – rref)
Would you like to see what kind of grades you need to achieve your goals? Click here for a grade calculator for BHS.