To Make a Calculator Graph

Get the data in first

Press the STAT button

Press ENTER or 1 to get to the lists

Enter the numbers into the list columns

(if you have to clear the lists use arrows and CLEAR)

Make Sure you are set up correctly for the graph

Press 2^nd STAT PLOT

Press ENTER

Use arrow and ENTER to turn Plot 1 ON (and others OFF)

Make sure the Type is the first Icon

X list is L1

Y list is L2, L3 etc

Hit ZOOM and down to choice 9 ENTER to make the graph fit

To do a linear Regression and Graph

STAT Rt Arrow > to CALC and choice 4 ENTER selects regression

2^nd L1 , 2^nd L2 , VARS Rt arrow > 1 1 ENTER GRAPH