The answer would be B and Dbecause if you use the formula y-b=m(x-a) where m is the gradient, and (a,b) are a point on the line. So m= (y2-y1)/(x2-x1) = (4-1)/(3-(-3)) = 3/6 = 1/2 And by using (a,b) this tells us that a=-3 when b=1 AND a=3 when b=4 Therefore the full equation must be either y-1=1/2(x+3) AND y-4=1/2(x-3) Hope this helps :-)
