Left column:
1.The slope of the line that passes through the points (9,6) and (1,4) will be:
[tex]m=\frac{6-4}{9-1}=\frac{2}{8}=\frac{1}{4}[/tex]2.note that the line passes through the points (2,1) and (-3,-4) then the slope will be:
[tex]m=\frac{-4-1}{-3-2}=\frac{-5}{-5}=1[/tex]