machine 1: formula for slope:
[tex]\frac{y2- y1 }{x2 - x1} [/tex]
for example :
[tex] \frac{1.2 - 0.6}{2 - 1} = \frac{0.6}{1} = 0.6 \: is \: the \: slope[/tex]
machine 2:
[tex] \frac{rise}{run} [/tex]
how many squares go up? how many squares go across until u touch the line? the slope is 1.
[tex] \frac{1}{1} = 1[/tex]
