Question 652088
the slope is defined as m and it is {{{m=(y2-y1)/(x2-x1)}}} which becomes {{{m=(-1-9)/(1-6)=-10/-2=5}}} and then we use the formula of {{{y-y1=m(x-x1)}}} which becomes {{{y-9=2(x-6)}}} which becomes {{{y-9=2x-12}}} and then {{{y=2x-12+9}}} which is {{{y=2x-3}}} and if you check the points for the x and the y, you will see that the line is true at those points.