Calculator work

Question

Hours of studying  
  2
  4
  6
Test Score  
  72
  85
  93
Clear your calculator first, using 2nd  "+"   7  1  2.
Enter the table above by clicking on STAT then ENTER.  Type each L1 value (Hours of studying), clicking on ENTER after each number.  Then click right arrow to go to L2 (Test Score) and type each value, clicking on ENTER after each one.
Run a linear regression (LinReg) by clicking STAT, right-arrow, 4, ENTER.
For your answer to this problem, type the slope, then a comma (,), then the y-intercept.  (No spaces please.)  Round your numbers to the tenths place (one decimal digit).

I NEED HELP!!!!!!!!!!!!!!!!

Answer 1

Press STAT.  Make sure you are on EDIT.  Then press ENTER.

 

 

In the column L1, insert

 

2, 4 and 6.   Press ENTER after hitting each number.

 

Press the right arrow key to shift from L1 to L2.

 

 

 

In the column L2, put

 

72, 85, 93

 

 

After you have inserted all of your numbers, press STAT, select CALC and scroll down to select LineREG (ax + b).  Press ENTER.

 

 

Slope = a

y-intercept = b