this assessment have been due 2 week ago and I don't understand it and i did number one hopefully i find sum help

Point 1 = (x1,y1) = (-2,-6)
Point 2 = (x2,y2) = (1,9)
Apply the slope (m) formula:
[tex]m=\frac{y2-y1}{x2-x1}[/tex]Replace:
[tex]m=\frac{9-(-6)}{1-(-2)}=\frac{9+6}{1+2}=\frac{15}{3}=5[/tex]Slope =5