Question 166322
First find the slope using the two points,
{{{m=(y[2]-y[1])/(x[2]-x[1])}}}
(-8, 6.5) and (9, -11)
{{{m=(-11-6.5)/(9-(-8))}}}
{{{m=(-17.5)/(17))}}}
To get rid of the decimal, multiply numerator and denominator by 2.
{{{m=(-17.5)(2)/(17)(2)=-35/34)}}}
Now that you have the slope, use the point-slope form of the line with either point,
{{{y-y[p]=m(x-x[p])}}}
{{{y-(-11)=-(35/34)(x-9)}}}
{{{y+11=-(35/34)x+35(9)/34}}}
{{{y=-(35/34)x+315/34-11}}}
{{{y=-(35/34)x+315/34-374/34}}}
{{{y=-(35/34)x-59/34}}}
or approximately,
{{{y=-1.029x-1.735}}}

{{{drawing( 300, 300, -10, 10, -12, 8,grid( 1 ),circle( -8, 6.5, .3 ),circle( 9, -11, .3 ),
 graph( 300, 300, -10, 10, -12, 8, -(35/34)x-59/34))) }}}