Scattered Data Forms

the first thing i did was make a form and asked the following questions:
How long does it take you to get to school?
how many cars you have?
heres my form!!!!!

then i waited for every1 to answer. when they anwered i made a bar graph. here it is!

 i also made a table

then i made a scatter plot by hand and drew my line of best fit!!!here it is!!!

this is how i found my slope!!!!!!!!
 this is what u do on the calc....
entered your data into L1 and L2 by going to STAT and EDIT on the GC. enter your x-values (# of siblings) into L1.  entered your y-values (# of letters) into L2.
Then turn my stat plot on by going to Y= and entering on plot 1 at the top.  Then went to ZOOM STAT (9) and magically your data appeared as a scatter plot.
Next you find the calculator's line of best fit by going to STAT > CALC and LIN REG (4).  Press enter one more time and gives a slope-intercept equation for the line of best fit.
 then enter the equation into y='s.