Question 317620
(-2,-4),(-8,-7).
Y=mX+b is the line equation.
m=the slope=(Y2-Y1)/(X2-X1)
b=the Y intercept.
m=(-7+4)/(-8+2)=-3/-6=1/2 ans. for the slope.
-4=1/2*-2+b
-4=-1+b
b=-4+1
-3 ans. for the Y intercept.
y=x/2-3 is this line equation.
Proof:
{{{ graph( 300, 200, -10, 5, -10, 10, x/2 -3) }}} (graph 300x200 pixels, x from -10 to 5, y from -10 to 10, x/2 -3).